ChiTronic&reg; Z2 Smart Watch Wristband Fitness & Sleep Tracker with OLED Display Pedometer Calorie Counter Distance, Water Resistant, App Enabled (for Left Hand) Achieve your goals: Z2 counts your daily steps, calories, distance; monitors sleep, and save the data in your cellphone App. Activate On Wrist Raise: Just like the Apple Watch, when you raise your wrist, Z2 will wake the display automatically. You can also touch the sensor area to activate the screen. Monitor your sleep - Set the sleep mode when you go to bed to track the quality of your rest. Up to 4 groups alarm clock; Incoming call and message reminder(no third party app notification); Sedentary reminder, vibrating alert to remind you stand up and move a little for one minute. Water & Sweat Resistance: Z2 has an excellent waterproofness, it is great for outdoor activities. Except when you take a shower, you may needn't take it off.