User Manual

v1.41 20230608 © 2023 ATMOS Co., Ltd.. All rights reserved

MISSION2 User Manual

Table of Contents
User Manual
1. Getting Started
1.1 Diving Safety
1.2 What's in the Box?
1.3 Changing the Strap
1.4 Basic Operation
1.4.1 Button Functions:
1.4.2 Power On/Off
1.4.3 Restart
1.4.4 Charging
1.5 Pairing your Smartphone
1.6 Smart Notification
1.7 Firmware Update
1.8 Change & Customize Watch Face
1.8.1 Change Watch Face
1.8.2 Customize Watch Face with Photos
1.9 Screen Protection & Loss Prevention
2. Widgets
2.1 Heart Rate Measurement
2.2 Sleep Monitoring
2.3 Steps & Calories
2.4 Outdoor
2.4.1 Sunrise & Sunset Time2.4.2 Altitude Calibration
2.4.3 Compass

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2.5 Tides
2.6 Weather
2.7 Stopwatch
2.8 Alarm Clock
3. Dive Mode
3.1 Water Auto-on
3.2 No Fly Time and Surface Interval
3.3 Scuba Mode
3.3.1 Scuba READY Screen
3.3.2 Scuba Settings
3.3.3 Scuba Screen Layout and Alarms
3.3.4 Scuba Log
3.3.5 Dive Plan
3.3.6 Altitude
3.4 Freedive Mode
3.4.1 Freedive READY Screen
3.4.2 Freedive Settings
3.4.3 Freedive Screen Layout and Alarms
3.4.4 Surface Interval (S.I.) Alert
3.5 Gauge Mode
3.5.1 Gauge READY screen
3.5.2 Gauge Settings
3.5.3 Gauge Screen Layout and Alarms
4. GPS
4.1 Dive GPS
4.1.1 Water Entry and Exit Records
4.1.2 Dive Site

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4.2 Sport GPS
31
5. Activities
32
5.1 Running Mode
32
5.1.1 Run Preparation READY Screen
32
5.1.2 Running Terminology:
33
5.1.3 Running Settings
33
5.1.4 Running Screen Layout and Alarms
33
5.2 Cycling (Bike) Mode
35
5.2.1 Cycling Preparation (Ready) Screen andOperation
35
5.2.2 Cycling Terminology:
36
5.2.3 Cycling Settings
37
5.2.4 Cycling Screen Layout and Alarms
38
5.3 Swimming Mode
39
5.3.1 Swim READY Screen
39
5.3.2 Swimming Terminology:
40
5.3.3 Swimming Settings40
5.3.4 Swimming Screen Layout and Alarms 41
5.3.5 Inaccurate Distance42
5.4 Ski / Board
42
5.4.1 Ski / Board READY Screen
42
5.4.2 Ski / Board Terminology:
43
5.4.3 Ski / Board Settings
43
5.4.4 Ski / Board Screen Layout and Alarms 44
6. Storage and Maintenance45
7. Warranty Policy46
8. Servicing
47

9. MISSION2 SPECS
10. CONTACT

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MISSION2 User Manual

1. Getting Started●

1.1 Diving Safety● To ensure safe and proper use, please read the user
manual before using the MISSION2.
● This manual is based on use of the default settings ofthe MISSION2.
● Do not use the MISSION2 as your only diving instrument.
A separate depth gauge should be standard equipment
for every diver and is highly recommended.
● All divers should conduct detailed Pre-Dive Safety
Checks to include emergency planning.
● In case of any equipment failure during your dive.
Firmware updates will be published on the ATMOS
support site as they become available. Check for
updates before your dives.
● Diving involves risk. Only trained divers should use the
MISSION2. Dive computers are not a substitute fortraining and good judgment.
● Do not use the MISSION2 on any dive beyond yourcertification and experience level. Diving with anincorrect assessment of your ability and physicalcondition can result in injury or even death.
● The MISSION2 is designed for recreational diving only.
Do not use the MISSION2 for commercial diving
applications.
● Divers should never ascend faster than 10m/min(33ft/min). Ascending at a faster rate will negatively
impact your decompression physiology.
● Please follow the decompression stops advised by
MISSION2. Violation of these stops will increase the risk

●
●

●

●

of decompression sickness, which may lead to serious
injury or death.
The MISSION2 is a precision instrument. Please takecare to protect your computer from damaging shocks or
chemical exposure. Store your MISSION2 out of direct
sunlight and avoid exposure to excessive heat. Neverleave the computer in a vehicle exposed to the sun.
Do not wear your MISSION2 in hot springs, hot tubs, or
saunas.
To avoid damage to buttons or sensors do not use highpressure sprays. If the computer is excessively dirty,
soak it in fresh water and gently wipe away dirt. Do notuse detergents or solvents of any kind.
Please use the Screen Guard included in the package.
Replacement screen guards may be purchased from an
authorized dealer.
Do not share dive computers. Sharing should be
avoided as it may cause divers to misjudge diveinformation and cause serious injury.

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MISSION2 User Manual

1.2 What's in the Box?
✲ MISSION2 with Silicone Wrist Strap✲ Charging Cable✲ Screen Scratch Guard (2 pcs)
✲ Watch Strap Pins (2 pcs)
✲ Warranty Card

Install a Strap:
1) Insert the strap pin opposite the spring clip into the strap
mount hole.
2) Push the strap spring clip to the compressed position
and align the strap pin with the strap mount hole.
3) Release the strap spring clip.
4) Confirm the strap is securely locked in place and thatthe spring clip has returned to its locked position.

1.3 Changing the Strap
In addition to the included long wrist straps, shorter straps areavailable for purchase through ATMOS and authorized ATMOS
dealers.
Remove the Strap:
1) Push the strap spring clip to the compressed position.
2) Lift out the strap.
3) Release the strap spring clip.
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1.4 Basic Operation

1.4.2 Power On/Off

1.4.1 Button Functions:Power On:
1) Press and hold button E for 2-3 seconds or connect theMISSION2 to the charging cable.
Power Off:
1) While in Watch mode, press and hold button E for 2-3
seconds.

1.4.3 RestartIn case of a depth lockdown, the MISSION2 can be restarted bypressing and holding both right-top and right-bottom buttons for 5
seconds. Any unfinished activity will not be logged.

1.4.4 Charging
Button functions may vary based on the type of button press
used. E.g., a quick press (“press”) versus a 3 second press andhold (“hold”). Function may also vary based on menu level.
Button A (press):
Button A (hold):

Up / View Smart Notifications
Toggle Bluetooth connection: On/Off

Button B (press):

Activity Menu / Confirm

Button C (press):
Button C (hold):

Down / Scroll Enabled Widgets
Access Stopwatch

Button D (press):

Return / MISSION2 SETTINGS Menu

Button E (press):
Button E (hold):

Turn Backlight On/Off
Power Off

Under normal use, it takes approximately 2 hours to fully
charge the MISSION2. The screen will display 100% whencomplete. If the battery is left uncharged for an extended
period (e.g, several weeks), the charging process may takelonger.
● Important: Please use a power adapter with safety
certification rated voltage of DC 5V/2A. Do not use
connectors or fast chargers that exceed the rated
voltage: DC 5V/2A. Use of such items may negatively
affect the lifespan of the battery or cause overheating.
● Make sure the charging points are clean and dry before
charging. Moisture and dirt can seriously affectcharging efficiency and may cause damage.
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MISSION2 User Manual● Ensure the charging cable is properly connected whencharging. If the charging position is not aligned
correctly, it may result in an improper connection andcause the watch to overheat.

Download ATMOS App:● The lithium battery in the MISSION2 can be damaged if
it is fully discharged. The MISSION2 has an interval
protection mechanism which will disconnect the battery
before it is fully discharged. However, a small amount ofdischarging will still occur over time. If it is left unused fora long time without regular charging, the lithium battery
may become fully discharged and have a shorter
lifespan. To avoid battery damage, completely power
off the device when it is not in use. Fully charge thebattery at least every two months to maintain battery
health.
iOS:

Android:

1.5 Pairing your Smartphone

https://Apple.co/31ouXTE

http://bit.ly/2WAfdNL

Use the ATMOS App to sync the dive and activities log andother watch data.

Note: App version may vary depending on your mobile phoneand software version.

Device Compatibility: Some devices may not be compatible.
Currently known to have compatibility issues: Huawei/ Oppo/ Vivo/
Xiaomi

Pair Your Device
1) MISSION2:a) Go to SETTINGS → CONNECT → CONNECT APP.
b) Select IOS or ANDROID as applicable andchange the setting to ON if necessary.
2) Mobile Phone / ATMOS APP

6MISSION2 User Manuala) Ensure mobile phone BlueTooth connections areenabled.
b) Open the ATMOS App. Create a new user
account if first time use.
c) Select Profile → Add device → Pair a new device.
d) Select the MISSION2 from the list of detected
devices. Enter the 5-digit Pin code shown on the
MISSION2 to complete the connection.
Note: If your device will not connect after pairing, pleaserestart the phone and MISSION2, then go through theunpair steps and then pair again.

Quick Tip: A long press of button A when in Watch
mode will toggle the BlueTooth connection on/off.

1.6 Smart Notification
The Smart Notification feature allows the MISSION2 to display
Short Message System (SMS) messages and phone calls
received on the paired smartphone (iOS 10 or higher, Android).

Quick Tip: The All Devices pairing screen can also beaccessed through the device icon located in the upper
left corner of the ATMOS APP Summary screen.

Unpair Your Device
1) MISSION2:a) Go to SETTINGS →CONNECT → UNPAIR andselect: YES
2) ATMOS APP:a) From the All Devices screen, swipe left on the
MISSION2 to Forget Device. Alternatively, selectthe device and then select the Forget Device icon
at the bottom of the screen.
3) Mobile Phone:a) Access Bluetooth devices → Select the MISSION2→ Forget the device

Enable Notifications:
1) Go to SETTINGS → CONNECT → NOTIFICATION.
2) Select the type of notifications to be received (All / Call
Only)
View Notifications Received:
1) While on Watch mode, press button A to viewnotifications.
2) Press buttons A or C to scroll up or down throughexisting notifications.
3) Press button B to select a message.
Note: All notifications are cleared after a watch restart.

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MISSION2 User Manual

1.7 Firmware Update
ATMOS regularly releases new firmware including newfeatures, bug fixes, and other improvements. To takeadvantage of these items, please keep the firmware of yourMISSION2 updated. Firmware updates require a USB
connection to a PC.
Check Firmware Version:1) Go to SETTINGS → SYSTEM → ABOUT. The Model,
Serial Number, and Firmware version will be displayed
Updating Firmware via cable (Windows)
1) Using a PC, go to the ATMOS website:
https://www.atmos.App/ and download the latest
MISSION2 firmware (Support > Firmware Update).
2) Place the MISSION2 into firmware update mode: Go to
SETTINGS → UPDATE.
3) Connect the MISSION2 to the PC using the USB
charging cable. The MISSION2 should be detected as a
new USB drive.
4) Open the downloaded firmware zip file and drag (orcopy) the firmware update .bin file into the FIRMWARE
folder of the MISSION2.
5) After the .bin file has been copied to the FIRMWARE
folder, disconnect the MISSION2 charging cable. The
MISSION2 will automatically start the update process.
Please let the process complete before once again
using the MISSION2.
Note: If the MISSION2 is not detected by the PC, ensure thatthe charging cable is completely/correctly attached to the

MISSION2. Each of the four pins of the charging cable must be
in contact with the device.
Updating Firmware via app
1. Sign in ATMOS app: https://www.atmos.app/app/
2. Pair with MISSION2
3. Click Update Firmware in Your Device page.
※ Do not switch off the app while updating.
※ It may take 5-10 minutes (iOS)/ Android may take longer.

1.8 Change & Customize Watch Face
The MISSION2 offers a variety of custom watch face options
including Classic Analog, Digital, and more!

1.8.1 Change Watch Face
Change Watch Face via MISSION2
1) Go to SETTINGS → WATCH FACE.
2) Press button A or C to scroll up or down through theavailable watch face styles.
3) Press button B to select the desired face.
Change Watch Face via the ATMOS App
1) While paired with the MISSION2, go to the All Devices
screen in the ATMOS App and select the MISSION2.
2) Select Watch Face from the list of Your Device options,select the desired watch face style.
3) Select Set as Current.

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1.8.2 Customize Watch Face with Photos
1) Using the ATMOS App (while paired with the MISSION2),
2)
3)
4)
5)

go to the All Devices screen and select the MISSION2.
Select Watch Face from the list of Your Device options.
Select one of the Photo watch face styles (e.g, PhotoClassic Analog, Photo Classic Digital).
In the Background Photo section, select Select Photo.
Browse to and select the desired personal photo. The
MISSION2 will automatically downsize the image ifnecessary.

1.9 Screen Protection & Loss Prevention
The MISSION2 is a rugged device which can withstand normal daily
use and sport activities. However, drops and strong impacts may
cause malfunctions and screen cracks. Use of the included screen
scratch guard is highly recommended. Note: the MISSION2 does nothave a scratch guard pre-installed. If needed, additional screen
guards can be purchased from ATMOS dealers.
To further protect the screen, it is recommended that the watch face
be turned to face inwards towards the body when entering/ exiting
the water. This may prevent damage from other dive gear.
The MISSION2 strap may show wear and tear over time. If there isany damage to the strap, it should be replaced as soon as possible.
A phone lanyard or a tether may be used to further secure the
MISSION2.

2. Widgets
The MISSION2 offers a variety of Sports and Health-related
Widgets!
Enable a Widget:

1) Go to SETTINGS → WIDGET → Select the desired Widget→ ON.
View Widget Information:

1) While on the main Watch screen, press button C to scroll
through enabled Widgets.

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MISSION2 User Manual

Note: some widgets such as Tides and Weather require aconnection to the ATMOS App in order to update.

2.1 Heart Rate Measurement
The MISSION2’s optical heart rate sensor measures the heart rateusing the LED optical sensor on the device. The sensor detects
changes in blood vessel blood flow corresponding to heart pulses.
Use of the heart rate function may impact battery life.

Note: The MISSION2 is not a medical grade device. The heart
rate data should not be used as a reference for medical
diagnosis.

✻ To ensure heart rate accuracy, the MISSION2 should beworn snuggly and should not be worn on the wrist joint
to avoid uneven reflection of the sensor’s light beam.
✻ When using the heart rate widget, wearing the watch
over objects such as long-sleeved clothing or winterclothing is not recommended.
✻ The heart rate may vary greatly due to light wavelength
absorption underwater, which in turn affects the opticaldetection. Consequently, the function is disabled bydefault during dive or swimming activities. It can be
enabled under those modes’ SETTINGS.

Causes of abnormal heart rate readings:

Enable Heart Rate:
1) Go to SETTINGS → WIDGET → HEART RATE: ON.
Check Heart Rate:
1) While on the Watch main screen, press button C to scroll
to the Heart Rate widget information.

● The heart rate sensor should be kept clean.
● Avoid applying sunscreen or skin lotion in the area of thewatch as these may result in an uneven reflection oflight.
● Arm hair, tattoos or skin tone, arm movement,
subcutaneous blood flow, etc. may all affect heart ratemeasurements.
● Cold weather may cause lower blood circulation andimpact readings. Keeping hands and feet warm will
improve the occurrence of the heart rate.
● Individuals with poor blood circulation may receive
inconsistent readings.
● Avoid scratching or otherwise damaging the heart rate
sensor on the back of the MISSION2

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2.2 Sleep Monitoring
The sleep monitoring widget should only be used for night time
sleep. Naps and other short-term sleep cannot be monitored
accurately.
Enable Sleep Monitoring Widget:
1) Go to SETTINGS → WIDGET→ SLEEP: ON
2) Set the desired Sleep Start and End period.
View Sleep Monitoring:
1) While on the Watch main screen, press button C to scroll
to the Sleep Monitoring widget.
2) While on the Sleep Monitoring screen, press button B toview weekly sleep data.

not worn during the set period, the lack of movement will beassumed to be “sleep” time.
Quick Tip: To help ensure the best quality of sleep
overnight, it is recommended that the Backlight Wrist
Activation be temporarily disabled. Otherwise,
movement may cause the backlight light to come on
and disturb sleep.

2.3 Steps & Calories
The MISSION2 will count your daily steps and calculate calories
burned.
Enable Step & Calories:

Dark: deep sleep | Light: light sleep1) Go to SETTINGS → WIDGET → STEP & CAL: ON
2) Enter the targeted number of Steps and Calories..
View Steps & Calories:
1) While on the Watch screen, press button C to scroll to

the Step and Calories widget.

The outer band denotes actual sleep time relative to targeted.
If the targeted sleep is obtained, the circle will be complete.
Note: the MISSION2 sleep monitoring algorithm is based on
device movement during the set sleep interval. If the device is
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MISSION2 User Manual

In the figure above, the orange outer circle is the step
counter, and the yellow inner circle represents calories
burned.
The increase in steps and calorie consumption will
gradually form a circle. When your set target values arereached, it will be a complete circle.
2) While on the Step & Cal screen, press button B to display
the weekly calories and steps averages. The target
value will be displayed on the middle line.

2.4 Outdoor
The MISSION2’s Outdoor Widget will display sunrise andsunset times, altitude, as well as provide compass functionality.
Enable Outdoor Widget:
1) Go to SETTINGS → WIDGET → OUTDOOR: ON
2) In time screen, press right-bottom button until see
Sunrise & Sunset Time2.4.1 Sunrise & Sunset Time
The sunrise and sunset times will only be displayed if GPS
signals are successfully acquired.

Note: Abnormal step counts may be caused by vibrations or
regular/repetitive arm movements while walking.

2.4.2 Altitude Calibration
Changes in weather such as high and low pressure areas willaffect the reading of altitude and air pressure. When theweather changes frequently, it is recommended that thecorrect altitude reference value be set if known. If the weather
is stable, no reference value setting is required.
While on the Outdoor widget screen, press button B to display
the altitude calibration options.
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Use GPS Altitude Calibration
Altitude data will be received during GPS positioning. When
there is a large altitude deviation or offset, use this option to set
the GPS calibrated altitude.

in the same pattern to calibrate the compass. Once calibrationis complete, the compass bearing and “OK” will be displayed.

Use Current Altitude Calibration
When there is a large altitude deviation or offset, input the
known altitude of the location, such as the altitude displayed at
a trailhead, as the reference value to calibrate the current
altitude.

2.5 Tides
Tidal information is provided for general reference only. The actual
tide levels may be significantly affected by local weather conditions
including atmospheric pressure, wind direction, and rain. Users
should assess local conditions and use prudent judgment on eachdive. Diving with an incorrect assessment of your ability and local
conditions can result in injury or even death.

2.4.3 Compass
The MISSION2’s compass is magnetically oriented and issubject to interference from nearby electric fields, magnets,
and metal objects. Please avoid wearing another computer,compass, or metal objects next to the MISSION2. Calibration isrecommended before every dive to ensure the bestexperience.
Compass Calibration
When a compass calibration is necessary, the MISSION2 willautomatically display an infinity “∞” pattern. Move the device
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Enable Tides Widget:
1) Mobile Phone / ATMOS APP:a) Ensure the mobile phone’s GPS is turned on andthat the ATMOS App has permissions to obtainlocation information.
b) Open the ATMOS App and connect to the
MISSION2.
c) On the App’s Your Device screen, select Tidesd) Use the current location acquired through themobile phone GPS, or add a new location (+).

2) MISSION2:a) Go to SETTINGS → WIDGET → TIDES: ONb) From the Watch screen, press button C to scroll
to the Tides widget.

2.6 Weather
Weather information of the current location can be obtained
when MISSION2 is connected to the ATMOS App.

2) Mobile Device / ATMOS App:a) Ensure the mobile phone has
GPS turned on and that theATMOS App is allowed toobtain location information.
b) Open the ATMOS App and pair
the MISSION2.
c) On the App’s Your Device
screen, select the Weather icon
to sync weather information to
the MISSION2.

2.7 Stopwatch
While in Watch mode, press and hold button C for 2-3 seconds.
Press button A: Start
Press button B: Mark lap/current time (4 sets can be displayed)
Press button A: Stop
Press button A (when stopped): Reset
Press and hold button D for 2 seconds: Exit

Enable / View Weather Widget:
1) MISSION2:a) Go to SETTINGS → WIDGET → WEATHER: ONb) From the Watch screen, press button C to scroll
to the weather widget. Note: weather data will notappear until the device has been paired andsynced with the ATMOS App.

2.8 Alarm Clock
The MISSION2 provides three setable of clock alarms.
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1) Go to SETTINGS → ALARM
2) Set the desired alarm time(s)3.2 No Fly Time and Surface Interval

3. Dive Mode
3.1 Water Auto-on
The MISSION2’s Dive Mode Auto-on feature will automaticallystart the dive activity and change the display to the default
dive mode screen. Note: Auto-on is based on a change inpressure at the initial descent and not simply submersion inwater. Even though Auto-on may be enabled, it is always a bestpractice to confirm dive settings prior to each descent and thatthe dive activity starts appropriately.
Dive mode activation depth: 1.2m
The default dive mode for auto-on is Scuba. The default modecan be changed in the MISSION2’s SETTINGS. The set default
is shown by the icon at the bottom of the screen in Watch
mode. When the default dive mode is set to OFF or when thedive mode icon display has been disabled in Watch Facesettings (ATMOS App), no icon will be shown on the screen.

Upper-left: No fly time icon (red airplane icon withdiagonal slash). This icon displays for 24hrs from thelast dive end. When Freediving, the No fly time icon
will be displayed when freedives are over 40m.
Because of residual nitrogen in the body, general diveguidance recommends waiting 24 hours from the last divebefore flying or otherwise ascending to altitudes above 300m /1,000ft. The MISSION2 utilizes this guidance. However, youractual dive profiles (e.g., single dive vs. repetitive dives, shallow
vs. deep) may affect the interval actually needed. Please
consult medical resources if flying in under 24 hours or if an
extensive amount of diving has been performed in a shortperiod.
Upper-right: Surface Interval (SI) icon.
The Surface Interval counter starts from the moment
your dive ends.

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3.3 Scuba Mode
3.3.1 Scuba READY Screen
1) From the main Watch screen, enter the activity Readymode by pressing button B and then selecting theactivity type.
The GPS icon will blink until the GPS position has beenacquired. After the signal is acquired, the icon will turngreen. Depending on the location and amount of
obstructions, a signal lock may take several seconds.
2) Press button C to enter the dive mode SETTINGS. As abest practice, it is recommended that all critical divesettings such as Air Mix, PPo2, and Conservatism beverified before each dive. Wrist HR (Heart Rate) is
disabled by default in water-related modes. However, it
can be enabled prior to the activity start.

Do not change any settings unless you understand the impactof those changes. Changes to items such as PPo2 andConservatism Gradient Factor (GF) will affect decompression
calculations and can impact your safety. Always check the
Air/Nitrox percentage and MOD before each dive. Incorrect
settings may increase the risk of central nervous system (CNS)
O2 toxicity. Do not exceed MOD.
Adjustable Functions:
Dive Plan

See 3.2.5 Dive Plan
Alarm (Dive)SPG Alarm

SPG Alarm provides alarm reminders to checkthe SPG air pressure after set amount(s) of time
have elapsed. (10 sets)

PPo2

Oxygen Partial Pressure: Adjustable between
1.2 - 1.6. (default: 1.4). This setting affects
Maximum Operation Depth (MOD).

Conservatism

HIGH (GF 35/75)
MEDIUM (GF 40/85)

3.3.2 Scuba Settings

WARNING!

Time Alarm: Time Alarm display notifies thediver when the set dive time has been reached.
(1 set)Depth Alarm: Depth Alarm notifies the diverwhen the set depth has been reached.
(1 set)3) Press button B button to start the activity.

While on the activity Ready screen, press button C to enter themode SETTINGS.

The Dive Plan function is used to estimate theno-decompression limit (NDL) for diving at theplanned depth for a specific time in the future

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LOW (GF 45/95)
CUSTOM (Adjustable GF - default 40/85)(bar/psi). At the dive conclusion, a prompt toenter residual pressure will appear.
Entered values are used to determine theSurface Air Consumption (SAC) rate.

Note: The CUSTOM function is for experienced
divers who have a sound understanding of
gradient factors.

Note: volume and beginning/ending pressures
may also be entered after the dive using theATMOS App.

Dive Site

See 4.1.2 Dive Site

Safety Stop

On/Off.
Set the desired Safety Time amount of time
(default - 3Min)

Wrist HR /Optical HeartRate

The heart rate function is disabled by default
for diving modes, but can be enabledaccording to personal needs.

SI (Surface
Interval)Reminder

On/Off.
Set Surface Interval time reminder.

Backlight

Adjust the backlight status (Always On),
brightness level and wrist activation.

After returning to the surface, a notification will
be sent when the set amount of Surface
Interval time has been reached

Reset
NitrogenReset the residual nitrogen accumulated by
the computer to zero.

Water Type

Warning: Do not reset this setting unless you
fully understand the corresponding effects on
NDL and DECO requirements!

Depth pressure correction based on
Freshwater / Seawater.
The density of salt water is about 3% higher
than that of fresh water. For the same pressure
value, the depth of fresh water will beapproximately 3 ft deeper.

Air / Nitrox
Setting

AIR / NITROX.
AIR: 21%
NITROX - adjustable 22-40%.

Tank Volume

Set the dive tank volume and initial pressure

Reset Setting

Restore activity mode settings to factory
defaults

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3.3.3 Scuba Screen Layout and Alarms
Predive
Upper-left: Compass heading (theinfinity symbol will be displayedwhen the compass needs to becalibrated)
Mid-left: Water temperature
Upper-right: NDL (No
Decompression Limit)(99+ will be displayed if NDL isgreater than 99 minutes)
Mid-right: Current depth
Bottom-left: MOD - (Maximum
Operation Depth)
Bottom-right: Heart Rate (HR) *if
enabled; disabled by default in
dive modes
Bottom: Air Mix.
21% = AIR / 22-40% = NITROX

During the Dive
Upper-left: Compass heading
Left: Ascent rate bar (m/ft)
Left: Water temperature
Upper-right: NDL (No
Decompression Limit)
Mid-right: Current depth
Bottom: Dive time
Note: Pressing button C will scroll
through the following fields:● Maximum depth● Average depth● TTS● Heart Rate (if enabled)
Bottom: Air Mix
21% = AIR / 22-40% = NITROX
Button E: Backlight On/Off.

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Mark Compass Heading
During the dive, press button B toaccess the mark heading screen.
Press button B to mark theheading.
Press button A to unmark theheading.

Fast Ascent
When the ascent speed exceeds
12m/min (approx. 40ft/min), theascent rate bar will turn red. If therate continues for over 5 seconds,
the MISSION2 will notify the diverwith a “SLOW DOWN” fast ascent
alarm.

Time Alarm
View Compass Heading
A marked heading will be shownon screen as a green pointerarrow.

TIME ALARM notifies the diverwhen the user-set Dive Time has
been reached.

Press button A to toggle to/fromthe dive navigation view.

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MISSION2 User Manual

Depth Alarm
DEPTH ALARM notifies the diverwhen the user-set dive maximum
depth has been reached.

Battery Low
BATTERY LOW notifies the diverwhen the MISSION2’s remaining
battery life is below 15%.

Safety Stop
SAFETY STOP notifies the diverthat the Safety Stop depth has
been reached. The default 3
minute Safety Stop begins oncethe diver has ascended to 6m(approx. 20ft). The Safety Stopcountdown continues if the depth
stays between between 3-7
meters (approx.10-23 feet).

The Safety Stop alarm can beswitched on and off, and can be
set according to personal needs
and dive plans.
Safety Stop Pause
SAFETY PAUSE notifies the diverthat the depth is outside of the
Safety Stop range (3-7 meters).
The Safety Stop countdown willcontinue once the Safety Stopdepth range is once again
obtained.
The Safety Stop will be reset if thediver subsequently descends to
12m (approx. 40ft).

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Safety Stop Clear
SAFETY CLEAR notifies the diverwhen the safety stop iscompleted.

Decompression Stop (DECO Needed)
When the NDL is exceeded,decompression stops may berequired. If so, the MISSION2 will
display a "DECO NEEDED" alarm.
The NDL indicator will be
replaced by "DECO" along with
the noted decompression depth.
In the example to the right(15m1’), a one minute DECO stop
is needed at 15 meters.

Low No Decompression Limit (NDL)
LOW NDL notifies the diver thatthe remaining NDL time is lessthan 3 minutes.

If a decompression stop isneeded, please ascend slowly
and safely to the noted depth. As
ascending impacts
decompression requirements, it ispossible to remove thedecompression stop requirement
before actually reaching thenoted depth.

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MISSION2 User Manual

Missed StopMISSED STOP appears when thediver has ascended above theDeco Stop ceiling depth.
Warning: If MISSED STOP
appears, you should safely
descend below the Deco Stopdepth to continue the required
decompression.

Maximum Operation Depth (MOD)MOD ALARM appears when adiver has exceeded the Maximum
Operating Depth based on thecurrent PPo2 settings.
Warning: If MOD ALARM appears,
you should immediately andsafely ascend to a safer depth to
avoid oxygen toxicity
complications.

Central Nervous System (CNS) Oxygen Toxicity
CNS ALARM appears when thecalculated central nervous
system toxicity loading
percentage is greater than 85%.
Warning: If CNS Alarm appears,
you should immediately andsafely ascend to a safer depth to
avoid oxygen toxicity
complications!

Time-to-Surface (TTS)
While in dive mode, TTS (inminutes) can be viewed bypressing button C.
TTS represents the calculated
time to safely ascend to thesurface and is based on thefollowing factors:* an assumed ascent rate of
10m/min (33ft/min)* includes decompression stops
calculated by the MISSION2* excludes any Safety Stop time.
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MISSION2 User Manual

Check SPGCHECK SPG appears when an
SPG alarm reminder time interval
has been reached. Up to 10
reminder alarms can be set for adive.
SPG notices are simply areminder to check the remaining
air supply and should not be usedin place of frequent SPG air
monitoring in accordance withsound diving practices.

Scuba Log
The Scuba dive log can beviewed in SETTINGS →LOGBOOK → SCUBA
Graphs:Press button B to display
the timeline.
Press button A or C toadvance the time line.
Log Marked Events:
Green dot: Safety Stop
Red dot: Ascent rate too fast
Red dot (with white border) :Decompression
Yellow dot: Depth Alert

3.3.4 Scuba Log
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MISSION2 User Manual

3.3.5 Dive Plan
The MISSION2 Dive Plan feature is used to estimate the No
Decompression Limit (NDL) time for the next dive.
Dive Planning:
1) While on the Scuba activity Ready screen, press button
C to access SETTINGS.
2) Select Dive Plan
3) Press button A or C to increase/decrease the selectedvalue.
4) Press button B to switch between the Depth field, theSurface Interval field, and OK.

Example: If you plan to dive to 23m
after a 45-minute surface interval,
you will have a 22-minute NDL.

Warning: If you have recently engaged in other dive activities
such as Scuba or Gauge, do not Freedive until the 24 hour
no-fly time has passed. This interval will help ensure that
residual nitrogen has cleared the body.

3.4.1 Freedive READY Screen
1) From the main Watch screen, enter the activity Readymode by pressing button B and then selecting theactivity type.
The GPS icon will blink until the GPS position has beenacquired. After the signal is acquired, the icon will turngreen. Depending on the location and amount of
obstructions, a signal lock may take several seconds.
2) Press button C to enter the mode SETTINGS. As a bestpractice, it is recommended that settings be verified
before each dive.
3) Press button B to start the activity.
Depth mode

3.3.6 Altitude
The MISSION2 will automatically track the air pressure at thecurrent location, and it will calibrate the depth value according
to the pressure value.

3.4 Freedive Mode
There are 2 Freedive modes: Freedive (Depth mode) and Pool
Free (Dynamic Apnea mode).
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MISSION2 User Manual

Dynamic Apnea mode

Ascent Alarm

Ascent Alarm notifies the diverwhen the set depth has beenreached.

Time Alarm

Time Alarm display notifies thediver when the dive time interval
has been reached. (10 sets)

SI (Surface Interval) Notify

Default (2x dive time)
CustomOff
A “Surface Interval Completed"reminder will appear when thesurface interval reaches theinterval reminder time.

Dive Site

See 4.1.2 Dive Site

Water Type

Depth correction based on
Freshwater / Seawater.

Set/Confirm the pool length before each dive.
The density of salt water isabout 3% higher than that offresh water, and the depth of
fresh water will be deeper under
the same pressure value

3.4.2 Freedive Settings
While on the activity Ready screen, press button C to enter
SETTINGS.
Wrist HR / Optical Heart Rate
Adjustable Functions:
Descent Alarm

Descent Alarm notifies the diverwhen the set depth has beenreached.

The heart rate function isdisabled by default during
diving modes, but can be
enabled according to personal
needs

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MISSION2 User Manual

Backlight

Reset Setting

Adjust the backlight status(Always On), brightness level
and wrist activation.
Restore activity mode settings
to factory defaults

During the Dive
Upper-right: Stopwatch (button A:
Start/Reset)
Mid-right: Current depth
Bottom-right: Dive time

3.4.3 Freedive Screen Layout and Alarms
Depth mode

Left: Water temperature
Predive

Upper-right: Stopwatch

Upper-left: Dive count

Button E: Turn the backlight
On/Off.
Post Dive

Mid-right: Current depth
Left: Water temperature
Bottom-right: Surface interval
time

After returning to the surface, themaximum depth, dive time, anddive count will be displayed.

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MISSION2 User Manual

During Surface Interval

During the Dive
Press button A to end.

Upper-left: Current count ofconsecutive divesLeft: Water temperature
Upper-right: Stopwatch timer
Mid-right: Surface interval time
Bottom-right: Press button C toscroll through maximum time,
maximum depth, heart rate, time,and compass heading
Press button D for SETTINGS, andto save & exit.

End of Dynamic Apnea Dive

Dynamic Apnea mode
PrediveEnter distanceUpper: Heart rate
Mid: Sets｜Dive time
Mid: Surface interval time
Bottom: Battery status andtime of day

Press button A to start
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MISSION2 User Manual

During Surface Interval
The surface interval (SI)time will continue toaccumulate.
The blue frame sets will
increase with the number ofdynamic apnea dives.

locked for 24 hours after the last Gauge mode dive. At theuser’s discretion, Scuba mode can be unlocked under Scuba >Settings. Please be aware that Scuba mode dives performed
less than 24 hours after a Gauge dive will not factor in nitrogenbuild up from the previous Gauge dives.

3.5.1 Gauge READY screen
1) From the main Watch screen, enter the activity Readymode by pressing button B and then selecting theactivity type.

3.4.4 Surface Interval (S.I.) Alert
Default setting:● Depth within 30 meters: (S.I.) Alert time is double the divetime.
● Depth beyond 30 meters, (S.I.) Alert time is dive depth
divided by 5 (minutes).

The GPS icon will blink until the GPS position has beenacquired. Depending on the location and amount of
obstructions, a signal lock may take several seconds.
2) Press button C to enter the mode SETTINGS. As a bestpractice, it is recommended that settings be verified
before each dive. Wrist HR (Heart Rate) is disabled bydefault in water-related modes. However, it can be
enabled prior to the activity start.
3) Press button B button to start the activity.

3.5 Gauge Mode
Gauge mode only displays depth, time, water temperature,
and ascent rate with the functions of depth gauge andunderwater timer.
Warning: Decompression calculations are not performed in
Gauge mode. To promote diver safety, Scuba mode will be
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MISSION2 User Manual

3.5.2 Gauge Settings

3.5.3 Gauge Screen Layout and Alarms

While on the activity Ready screen, press button C to enter themode Settings.
Adjustable Functions:
Dive Alarm

Time Alarm: Time Alarm display notifies thediver when the Dive Time has been reached.
(1 set)Depth Alarm: Depth Alarm notifies the diverevery minute when the maximum depth has
been reached.
(1 set)Dive Site

See 4.1.2 Dive Site

Water Type

Depth correction based on Freshwater /Seawater.
The density of salt water is about 3% higher
than that of fresh water, and the depth of fresh
water will be deeper under the same pressure
value

Wrist HR /Optical HeartRate

The heart rate function is disabled by default
during diving modes, but can be enabledaccording to personal needs.

Backlight

Adjust the backlight status (Always On),
brightness level and wrist activation.

Reset Setting

Restore activity mode settings to factory
defaults.

Predive
Upper-left: Compass heading
Mid-left: Water temperature
Upper-right: Set time alarm
Mid-right: Current depth
Bottom-right: User-set depth alarm

During the Dive
Upper-right: Stopwatch (button A:
Start/Reset)
Mid-right: Current depth
Bottom-right: Dive time
Upper-left: Compass
Mid-left: Water temperature
Button E: Turn the backlight On/Off.
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MISSION2 User Manual

4. GPS
Because of the MISSION2’s waterproof case and compact size
which limits antenna strength, the GPS function is mostsuitable for outdoor areas.
Factors that affect GPS signal acquisition and positioning:
GPS positioning is done through electromagnetic waves. Whenobstacles are encountered, signal reception will be affected
and positioning cannot be guaranteed.
The following are common GPS disturbances:* High-rise buildings: With cement walls of high-rise buildings
and alleys on both sides, the signal received may be relatively
weak.
* Forest roads: Dense leaves and branches act as obstructions
which will reduce the penetration of GPS electromagnetic
waves.
* High-voltage / Antenna towers: electromagnetic waves ofdifferent frequencies generated by high-voltage or radio
antenna towers may interfere with the GPS signal reception.
* Cloudy days & air pollution: thick clouds, water vapor in theclouds, and components in air pollution may affect the GPS
signal reception.

mode → press button C to go to SETTINGS → DIVE SITE →NEARBY SITES, wait for GPS to be acquired.
Switch to a dive mode Ready screen. A blinking GPS icon
indicates that the GPS is being positioned. The icon will stop
blinking when the positioning is complete.
Quick Tip: Use the “sync GPS” function in the ATMOS
App to sync the satellite ephemeris data to the
MISSION2. This step will shorten the time needed forthe device to acquire the GPS signal.

4.1.1 Water Entry and Exit Records
Entry point: Descending while GPS is acquired will mark thedive entry point. This information will be shown on the map in
the dive log in the ATMOS App.
Exit point: The MISSION2 will automatically attempt to locate
and record the water exit point at the end of dive. Note: thisfunction is dependent upon successful GPS positioning at theconclusion of the dive.

4.1 Dive GPS
Acquiring a GPS signal
1. Ensure that the MISSION2 is in an open area with anunobstructed view of the sky. Make sure the watch face ispointed to the sky. Depending upon the location, it may take5-8 minutes to acquire a signal. Switch to any dive activity

Afterthe dive
log is synced to the ATMOS App, the Entry and Exit points will
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MISSION2 User Manual

be displayed on the dive site map. The arrow down icon is thewater Entry location, and the arrow up icon is the water Exit
location.

4.1.2 Dive Site
The Dive Site function can be accessed in Scuba, Freedive, orGauge Mode's SETTING prior to descent. Note: As this relies on
GPS location data, GPS positioning must be complete.
1. Nearby Sites: Show 10 nearby dive sites in the ATMOS
database.

2. Add: Add a new dive site. By default, the site will be
named by date and GPS location.

Quick Tip: Once a Dive Site has been added to the
MISSION2, use the ATMOS App and Edit My List to
rename the Dive Site.

4.2 Sport GPS
Outdoor sports: GPS positioning should be completed before
starting a running, cycling, swimming, and ski/boarding
activity. Performing sports without GPS positioning will affectthe accuracy of logging and calories burned.

3. My List: View your added Dive Sites

When the GPS signal is interrupted, the GPS LOSS alarm willappear until the signal is re-received. Once the signal isre-obtained, GPS GET will be briefly displayed.
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3) Press button B button to start the activity.
Run Indoor Mode:
1) From the main Watch screen, enter the activity Readymode by pressing button B and then selecting theactivity type.

5. Activities
5.1 Running Mode
The Running Mode provides two activity options: RUN (outdoormode) and RUN INDOOR.

5.1.1 Run Preparation READY Screen

No GPS positioning or route tracking is performed in thismode.
2) Press button C to enter the mode SETTINGS. As a bestpractice, it is recommended that settings be verified
before each dive.
3) Press button B to start the activity.
Run

Run Indoor

Run Mode:

1) From the main Watch screen, enter the activity Readymode by pressing button B and then selecting theactivity type.
The GPS icon will blink until the GPS position has beenacquired. After the signal is acquired, the icon will turngreen. Depending on the location and amount of
obstructions, a signal lock may take several seconds.
2) Press button C to enter the mode SETTINGS. As a bestpractice, it is recommended that settings be verified
before each activity.
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5.1.2 Running Terminology:

the lap.

PACE: The time it takes to run or complete a kilometer or mile.
For example, a runner with a 7 minute pace will complete akilometer (or mile) in 7 minutes (assuming a constant pace).

Auto Lap:
There are two modes for automatic lap count:
Distance: Count laps automatically when theset distance has been reached.

STRIDE: The distance between two feet after initial contact of
one foot.

Duration: Count the lap automatically when theset time (duration) has been reached.

CAD: Cadence - the number of steps per minute.
Auto Pause

When movement stops, the MISSION2 willautomatically pause the activity until
movement resumes.

StrideEnter the stride distance - the default value iscalculated from the height value entered by
the user.
Heart rate sensing function can be enabledaccording to needs.

Adjustable Functions:

Wrist HR /Optical Heart
Rate

FieldsSensors

Add sensors, such as a heart rate monitor.

Backlight

Adjust the backlight status (Always On),
brightness level and wrist activation.

Reset Setting

Restore activity mode settings to factory
defaults.

Lap Count: Record split pace by distance or time as a tool forrunners to control or adjust their pace.

5.1.3 Running Settings
While on the activity Ready screen press button C to enter themode SETTINGS.

Modify the fields displayed on the running
sub-screen.
Field options: Ascent, Descent, Alt, Temp, Dist,
Time, Pace, KCAL, Avg Pace, Pitch, Stride,
Step, Avg HR, Max HR

AlarmsDistance: notifies when the set distance has
been reached.
Duration: notifies when set time (duration) has
been reached.

Lap

Manual Lap: Press button A to manually count

5.1.4 Running Screen Layout and Alarms
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MISSION2 User Manual

Running Main Screen
Upper-mid: Heart rate

The lap will be counted
automatically when the set time or
distance has been reached.

First field: Distance
Second field: Running timeThird field: Pace
Bottom-mid: Battery status andtime of day
Manual Lap Count
Running Sub-screen

Press button A to manually countthe lap.

Press button C to toggle between
the main activity screen and theactivity sub-screen.
Use the FIELDS option in theactivity’s SETTINGS to customize
the primary data fields shown on the
sub-screen.

Automatic Lap Count

Auto Pause
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MISSION2 User Manual

Auto Pause enabled: whenmovement stops, the MISSION2 willautomatically pause the activity
until movement resumes.

5.2 Cycling (Bike) Mode
Cycling mode provides two modes: Bike (outdoor) and Bike
Indoor.

5.2.1 Cycling Preparation (Ready) Screen andOperation
Bike Mode:
1) From the main Watch screen, enter the activity Readymode by pressing button B and then selecting theactivity type.

Pause and Save
While on the main Run screen, press
button D to pause the activity.
Press button A to resume theactivity.
Press button C to save and end theactivity.

The GPS icon will blink until the GPS position has beenacquired. After the signal is acquired, the icon will turngreen. Depending on the location and amount of
obstructions, a signal lock may take several seconds.
2) Press button C to enter the mode SETTINGS. As a bestpractice, it is recommended that settings be verified
before each activity. External sensors can be
enabled/disabled for the activity, and display fields canbe customized prior to the activity start.
3) Press button B button to start the activity.
Bike Indoor Mode:GPS positioning and tracking is disabled under Bike Indoor
Mode.

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MISSION2 User Manual

1) From the main Watch screen, enter the activity Readymode by pressing button B and then selecting theactivity type.
2) Press button C to enter the mode SETTINGS. As a bestpractice, it is recommended that settings be verified
before each activity. External sensors can be
enabled/disabled for the activity, and display fields canbe customized prior to the activity start.
3) Press button B button to start the activity.
Cycling Modecircumference 90 times in one minute will be 90 rpm(Revolutions per Minute). The recommended cadence: 90~110rpm.
Lap Count: Record the speed of the segment by distance ortime, as a tool to control or adjust the speed.
Wheel Diameter: Enter the wheel diameter of the bicycle. For
example, 700*23C for road bikes is equivalent to 2096mm.
Wheel sizes are usually marked on the sides of the tires. This is
not a complete list. If you do not have your wheel diameter
information, you can search the Internet and calculate thesizes that are not in the list.

Indoor Cycling Mode
Wheelset

5.2.2 Cycling Terminology:
Speed: The distance that may be traveled per hour. For
example: a cyclist with a constant 25 kph rate can travel 25km
in 1 hour.
CAD: Cadence. The number of pedal rotations per minute. For
example, one foot passing the same position on the

RIMS

mm

RIMS

mm

24 × 1.75

1890

27 × 1-3/8

2169

24 × 1-1/4

1905

29 x 2.1

2288

24 × 2.00

1925

29 x 2.2

2298

24 × 2.125

1965

29 x 2.32326

26 × 7/8

1920

650 x 20C

1938

26 × 1-1.0

1913

650 x 23C

1944

26 × 1

1952

650 × 35A

2090

26 × 1.25

1953

650 × 38B

2105

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MISSION2 User Manual

26 × 1-1/8

1970

650 × 38A

2125

5.2.3 Cycling Settings

26 × 1.40

2005

700 × 18C

2070

While on the activity Ready screen, press button C to enter
SETTINGS.

26 × 1.50

2010

700 × 19C

2080

26 × 1.75

2023

700 × 20C

2086

26 × 1.95

2050

700 × 23C

2096

26 × 2.00

2055

700 × 25C

2105

26 × 1-3/8

2068

700C
Tubular2130

26 × 2.10

2068

700 × 28C

2136

26 × 2.125

2070

700 × 30C

2146

26 × 2.35

2083

700 × 32C

2155

26 × 1-1/2

2100

700 × 35C

2168

26 × 3.00

2170

700 × 38C

2180

27 × 12145

700 × 40C

2200

27 × 1-1/8

2155

700 × 44C

2235

27 × 1-1/4

2161

700 × 45C

2242

Adjustable Function:
FieldsModify the fields displayed on the cycling
sub-screen.
Field Options: Ascent, Descent, Dist, Time,
Speed, KCAL, CAD, AVG Speed, Avg HR, Max
HR, Slope, Alt, Temp

AlarmsDistance: notifies when the set distance has
been reached.
Duration: notifies nwhen set time (duration)
has been reached.

Lap

Manual Lap: Press button A to manually countthe lap
Auto:
There are two modes for automatic lap count:
Distance: Count the lap automatically when
the set distance has been reached.
Duration: Count the lap automatically when theset time has been reached.

Auto Pause

When movement stops, the MISSION2 willautomatically pause the activity until
movement resumes.

WheelEnter the wheel diameter (mm) of the bike.

Wrist HR /Optical heart rate sensing function can be
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MISSION2 User Manual

Optical Heart
Rate

enabled according to needs.

Sensors

Add external sensors, such as a heart ratemonitor or cadence sensor

Backlight

Adjust the backlight status (Always On),
brightness level and wrist activation

Reset Setting

Restore activity mode settings to factory
defaults

Cycling sub-screen
Press button C to toggle
between the main activity
screen and the activity
sub-screen.
Use the FIELDS option in
the activity’s SETTINGS tocustomize the primary data
fields shown on the
sub-screen.

5.2.4 Cycling Screen Layout and Alarms
Cycling Main Screen
Upper: Heart rate
First field: Distance
Second field: Cycling Time

Automatic Lap CountThe lap will be counted
automatically when the set
time or distance has beenreached.

Third field: Speed
Bottom: Battery Status andTime of Day

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MISSION2 User Manual

Manual Lap Count
Press button A to manuallycount the lap.

Pause and Save
While on the main Bike
screen, press button D topause the activity.
Press button A to resume
the activity.
Press button C to save andend the activity.

Auto Pause
Auto Pause enabled: whenmovement stops, the
MISSION2 willautomatically pause theactivity until movement
resumes.

5.3 Swimming Mode
There are 2 Swim modes: Pool and Open Water.

5.3.1 Swim READY Screen
Pool Mode: When using Pool Mode for the first time, you will beprompted to enter the length of the pool. After this distance isset, the MISSION2 will use the same setting the next time you
swim in Pool mode. If the distance changes, go to the mode
SETTINGS to change it.
1) From the main Watch screen, enter the activity Readymode by pressing button B and then selecting theactivity type.

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MISSION2 User Manual

2) Press button C to enter the mode SETTINGS. As a bestpractice, it is recommended that settings be verified
before each activity.
3) Press button B to start the activity.
Open Water Mode:
1) From the main Watch screen, enter the activity Readymode by pressing button B and then selecting theactivity type.
The GPS icon will blink until the GPS position has beenacquired. After the signal is acquired, the icon will turngreen. Depending on the location and amount of
obstructions, a signal lock may take several seconds.
2) Press button C to enter the mode SETTINGS. As a bestpractice, it is recommended that settings be verified
before each activity.

5.3.2 Swimming Terminology:
PACE/100M: Pace to complete 100 meters.
SWIM TOTAL: Accumulated number of strokes.
SWOLF: a measure of swimming efficiency.
The SWOLF calculation is as follows: The number ofstrokes to complete a lap + the number of seconds tocomplete a lap. The lower the SWOLF value, the higher
the swimming efficiency.

5.3.3 Swimming Settings
While on the Ready screen, press button C to enter the mode
SETTINGS.
Adjustable Function:
Fields3) Press button B to start the activity.
Pool Mode

Customize the fields displayed on the Swim
subscreen.
Field options: Swim Lap, Avg HR, Max HR,
Temp, Total Stroke, Dist, Time, Pace, KCAL,SWOLFOpen Water
Alarm

Distance: notifies when the distance has beenreached.
Duration: notifies when set time (duration) has
been reached.

Pool Length(Pool)

Enter the pool distance: 25m, 50m, or custom.

Lap (Open
Water)

Lap Count Button: Press button A to manuallycount the lap
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MISSION2 User Manual

There are two modes for automatic lap count:
Distance Lap Count: Count the lap
automatically when the set distance has beenreached.
Time lap count: Count the lap automaticallywhen the set time has been reached.

Upper: Heart rate

Wrist HR /Optical Heart
Rate

Optical heart rate sensing function can be
enabled according to needs.

Second field: Swimmingtime(without turning)

Wear Wrist

Right Hand / Left Hand

Backlight

Adjust the backlight status (Always On),
brightness level and wrist activation.

Reset Setting

Restore activity mode settings to factory
defaults

Open Water Main ScreenFirst field: DistanceThird field: 100m pace

5.3.4 Swimming Screen Layout and Alarms
Pool Main Screen
Upper: Heart rate
First field: Distance

Bottom: Battery status andtime of day
Pool and Open Water Sub-screen
Press button C to toggle
between the main activity
screen and the activity
sub-screen.
Use the FIELDS option in
the activity’s SETTINGS tocustomize the primary data
fields shown on the
sub-screen.

Second field: Number oflaps and swimming timeThird field: 100m pace
Bottom: Battery status andtime of day

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Pause and Save
While on the main Swim
screen, press button D topause the activity.
Press button A to resume
the activity
Press button C to save andend the activity.

5.3.5 Inaccurate Distance
When swimming in a pool, the following conditions may resultin inaccurate information:● Stopping before reaching the end of a lap● Changing swimming strokes● Swimming using a floating board without hand stroke● Dynamic Apnea without hand stroke● Using informal strokes such as side kicking, one arm
strokes, back floating, etc.
When swimming outdoors, it is necessary to ensure that the
GPS Satellite reception is successful before the activity. If thepositioning is not successful, the accuracy of the daily log
record will be affected. The following items may help improveaccuracy.

● Wait an additional minute or two before jumping into thewater. This will allow the watch to further triangulate
your current position.
● Swim with a stroke where the wrist comes out of theWater

5.4 Ski / Board
Due to the characteristics of the battery, using MISSION2 in a
sub-zero environment may encounter a situation where it
cannot be powered on. It is recommended to power it on
before entering an extremely cold environment. Avoid rinsing itwith hot water when returning from a sub-zero environment toavoid damage caused by thermal expansion.

5.4.1 Ski / Board READY Screen
1) From the main Watch screen, enter the activity Readymode by pressing button B and then selecting theactivity type.
The GPS icon will blink until the GPS position has beenacquired. After the signal is acquired, the icon will turngreen. Depending on the location and amount of
obstructions, a signal lock may take several seconds.
2) Press button C to enter the mode SETTINGS. As a bestpractice, it is recommended that settings be verified
before each activity.
3) Press button B button to start the activity.

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MISSION2 User Manual

Note: Cold weather can impact blood circulation and may
cause inaccurate heart rate readings.

Field Options: Slope, Dist, Alt, Time, Speed,
KCAL, Temp, Avg HR, Max HR
AlarmsSkiingSnowboarding

Distance reminder: notifies when the set
distance has been reached.
Time Alarm: notifies when set Time has beenreached.

Lap

Manual Lap: Press button A to manually countthe lap
Auto: There are two modes for automatic lap
count:
Distance: Count the lap automatically when theset distance has been reached.
Duration: Count the lap automatically when theset time has been reached.

Auto Pause

When movement stops, the MISSION2 willautomatically pause the activity until movement
resumes.

Lap Count: Record the speed of the segment by distance ortime, as a tool to control or adjust the speed.

Wrist HR /Optical Heart
Rate

Optical heart rate sensing function can be
enabled according to needs.

5.4.3 Ski / Board Settings

Sensors

Add external sensors, such as a heart ratemonitor

While on the activity Ready screen, press button C to enter themode SETTINGS.

Backlight

Adjust the backlight status (Always On),
brightness level and wrist activation.

Adjustable Functions:

Reset Setting

Restore activity mode settings to factory
defaults

5.4.2 Ski / Board Terminology:
Speed: The distance one could ski per hour at a constant rate.

FieldsModify the fields displayed on the Ski/ Board
sub-screen.

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5.4.4 Ski / Board Screen Layout and Alarms
Ski / Board Main Screen
Upper: Heart rate
First field: Distance

Automatic Lap CountThe lap will be counted
automatically when the set
time or distance has beenreached.

Second field: Activity timeThird field: Speed
Bottom: Battery status andtime of day

Ski / Board Sub-screen
Press button C to toggle
between the main activity
screen and the activity
sub-screen.

Manual Lap Count
Press button A to manuallycount the lap.

Use the FIELDS option in theactivity’s SETTINGS tocustomize the primary data
fields shown on the
sub-screen.

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MISSION2 User Manual

Auto Pause
Auto Pause enabled: whenmovement stops, the
MISSION2 will automaticallypause the activity until
movement resumes.

some corrosion may still occur if substances such as dirt,
sweat, and salt water are not cleaned off after use. Aftereach day of activities, rinse the MISSION2 thoroughly withfresh water.
* To store your MISSION2, fully charge the computer then turnthe MISSION2 off. Store your MISSION2 in a cool, dry place,protected from damaging shocks, heat, humidity, and awayfrom sunlight.
* The MISSION2 uses a lithium battery which may slowly
discharge over time. When the MISSION2 is not in use,
ATMOS recommends fully charging the device once every 2months to extend the lifespan of the battery.

Pause and Save
While on the main Ski/Board
screen, press button D topause the activity.
Press button A to resume theactivity.

* Static electricity might cause MISSION2 to malfunction andstrong static electricity can damage the electronic
components.
* MISSION2 has a compass function, so strong magnetic fields
such as one emitted by medical equipment shall be avoided
as it may cause the compass to fail or malfunction.

Press button C to save andend the activity.

* The MISSION2 is a rugged device which can withstandnormal daily use and sport activities. However, drops andstrong impacts may cause malfunctions and screen cracks.

6. Storage and Maintenance* Avoid leaving the MISSION2 in direct sunlight or in vehicles
exposed to sunlight and excessively high temperatures.
Extremely high or low temperatures will cause malfunction
and damage to the electronic components of MISSION2.

* The MISSION2 bezel, buttons, and charging port are madewith highly corrosion-resistant 316 Stainless Steel. However,45

MISSION2 User Manual

7. Warranty Policy
Consumer Limited Warranty
Limited Warranty
Products are warranted to be free from defects in materials orworkmanship for one year from the date of purchase. To obtainwarranty service, an original or copy of the sales receipt fromthe original retailer is required.
Warranty service is valid in the country of purchase
With the exception of consumables or parts with limited
resistance, such as the case, the glass, battery and band, thisproduct is guaranteed to be free from defects in materials orworkmanship within the warranty period.
During the warranty period, and upon proof of purchase, theproduct will be repaired with ATMOS replacement or
refurbished parts, or replaced by a new or refurbished deviceof the same or a similar model.
To obtain these warranty services, please take or send the
product, postage paid, with a copy of the sales receipt or otherproof of purchase showing the date of purchase, to a memberof the ATMOS Authorized Warranty Network or the store wherepurchased.
The customer shall NOT have any claim under this warranty forrepair, replacement or refund if:
1) The problem is caused by improper, rough or carelesstreatment.
2) The problem is caused by a fire or other natural calamity.

3) The problem is caused by improper repair or adjustments
made by anyone other than an
ATMOS service center.
4) The problem is wear on the case, glass, battery, or band;5) The proof of purchase is not presented when requesting
service.
6) The warranty period has expired.
NEITHER THIS WARRANTY NOR ANY OTHER WARRANTY OR
GUARANTEE, EXPRESS OR
IMPLIED, INCLUDING ANY IMPLIED WARRANTY OR
CONDITION OF MERCHANTABILITY OR OF FITNESS FOR A
PARTICULAR PURPOSE, SHALL EXTEND BEYOND THE
WARRANTY PERIOD. NO RESPONSIBILITY IS ASSUMED FOR
ANY INCIDENTAL OR CONSEQUENTIAL DAMAGES,INCLUDING, WITHOUT LIMITATION, DAMAGES RESULTINGFROM INACCURACY OR MATHEMATICAL INACCURACY OF
THE PRODUCT OR LOSS OF STORED DATA. SOME STATESOR JURISDICTIONS DO NOT ALLOW LIMITATIONS OF HOW
LONG AN IMPLIED WARRANTY LASTS AND SOME STATES ORJURISDICTIONS DO NOT ALLOW THE EXCLUSION OR
LIMITATION OF INCIDENTAL OR CONSEQUENTIAL DAMAGES,OR THE EXCLUSION OR LIMITATION BY A PARTY OF
LIABILITY FOR DEATH OR PERSONAL INJURY CAUSED BY
THATPARTY’S NEGLIGENCE. THE ABOVE LIMITATIONS OR
EXCLUSIONS SHALL NOT IN SUCH CASES AppLY. THISWARRANTY GIVES YOU SPECIFIC RIGHTS, AND YOU MAY
ALSO HAVE JURISDICTION, OR COUNTRY TO COUNTRYWARRANTY. NOTHING IN THIS WARRANTY AFFECTS YOURSTATUTORY RIGHTS.

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MISSION2 User Manual

8. Servicing

Memory/ History

100 logs

Languages

EN, KO, JA, ZH-CN, ZH-TW

There are no user serviceable parts inside the MISSION2. Do
not tighten or remove the faceplate screws. Clean with water
ONLY. Any solvents may damage the MISSION2 dive computer.
Service of the MISSION2 may only be done at ATMOS or by anauthorized service center.

Metric and Imperial units ✔

For service requests, contact► The store where the device was purchased.
Regional Distributor / Dealer► Where to buy/contact

9. MISSION2 SPECS
GENERALModel

MISSION2

Water Rating

100m (EN13319)

Size

50 x 50 x 16.8mm

Weight83g

Lens Material

SApphire Crystal Lens

Display1.2”, sunlight-visible, transflective, hi-res color
display

Bezel & Button Material

Stainless steel 316L

Case Material

Fiber-reinforced polymer

Watch Strap

Silicone, Width 26 mm, Quick release

Rechargeable Battery✔ Lithium Ion, factory replaceable

Operating Temperature
0° C to +45° C / +32° F to +113° F (±2°C)(diving)
Operating temperature(non-diving):-20 °C to +60 °C / -4 °F to +140 °F

Battery Life

Watch Mode (Heart Rate off): Up to 7 days
Sport Mode (GPS & Heart Rate on): Up to 7
hours
Dive Mode: Up to 20 hours(Battery life varies by use)

Firmware Upgradeable

✔

CLOCK
Time, Date✔

GPS Time Sync✔

Dual time✔

Alarm Clock✔

Stopwatch✔

24-hour military time✔

HEALTH MONITORING
Heart Rate

✔

Sleep

✔

Calories Burned✔

Step Counter✔

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MISSION2 User Manual

SENSORS

Surface Time✔

GPS

✔ (GPS, GLONASS)

Freedive Ascent /Descent Alarm✔ (10 sets)

Barometric Altimeter✔

Freedive Stopwatch✔

Digital Compass✔

Dive Planner✔

Gyroscope✔

Po2

1.2-1.6

Accelerometer✔

Fresh/ Salt water✔

Thermometer✔

Backlight✔ (Auto-on on Dive)

Depth Sensor✔

Altitude Adjustment✔ (Automatic)

Digital Compass✔

Mark Dive Entry & Exit
GPS Locations✔ (Surface use only)

DAILY SMART FEATURES
Smartphone
Compatibility

Most common iOS / Android phones
supported

Smart Notifications✔

Sunrise & Sunset Times✔

Weather

✔

Tidal

✔

Dive spot GPS guidance ✔ (Surface use only)
Alarm Methods

Visual, Vibration and Audible Buzzer

Alerts & Alarms

Fast Ascent｜Safety Stop｜Low NDL｜Deco
Stop｜Deco Stop Ceiling Violation｜Dive Time
｜Depth｜Low Battey｜MOD｜CNS｜S.I.
Notify｜Check SPG

Residual Tissue Loading✔
Reset

DIVING FEATURES
Modes

Air / Nitrox / Freedive / Freedive Pool / Gauge

Decompression Model

Bühlmann ZHL-16c (GF configurable)

Gas✔ Single gas (Oxygen 21-40%)

In-water activation✔

Depth & Time Alarms✔

Safety Stop✔

Dive Ascent Indicator✔

No Fly Time✔

Digital Dive Log

ATMOS App (iOS / Android)

SPORT
Running✔ (indoor / outdoor)

Biking✔ (indoor / outdoor)

Swimming✔ (indoor / outdoor)

Skiing✔

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MISSION2 User ManualWhat’s in the box

Included Items

MISSION2
Standard silicone band (Width 26mm, Length135-230mm)
Watch strap pins (2 pcs)
Charging cable
Screen protector (2 pcs)
Warranty card

10. CONTACT
Global: Find the Regional Distributor / Dealer► Where to buy/contact

Taiwan - Headquarters► ATMOS Co., Ltd.
16F-7, No. 258, Liancheng Rd., Zhonghe Dist., New Taipei City
235, Taiwan (R.O.C.)+886-2-82271899
info@atmos.App

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