Search query: vivofit is 4

Product: Garmin Vivosmart 4, Activity and Fitness Tracker w/ Pulse Ox and Heart Rate Monitor, Black
Brand: Garmin
Color: Black
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Garmin Vivosmart 4, NA/AUS, Black/Slate, Small/Medium, 010-01995-10
Slim, smart activity tracker blends fashionable design with stylish metal accents and a bright, easy to read display
Includes advanced sleep monitoring with REM sleep and can gauge blood oxygen saturation levels during the night with the wrist based Pulse Ox sensor. (Not a medical device and not intended for use in the diagnosis or monitoring of any medical condition)
Fitness and health monitoring tools include estimated wrist based heart rate, all day stress tracking, Relaxation breathing timer, Vo2 Max, body battery energy monitor and more
Features dedicated activity timers for walks, runs, strength training, yoga, pool swims and others; Lens material: Polycarbonate. Strap material: Silicone
Get vibration alerts for All notifications, including calls, text messages and more (text replies available for Android device users). Display resolution: 48 x 128 pixels

Product: Fitbit Charge 3 Fitness Activity Tracker, Graphite/Black, One Size (S and L Bands Included)
Brand: Fitbit
Color: Graphite/Black
Relevance: Substitute
Better measure calorie burn, understand resting heart rate & more with 24x7 heart rate tracking and a battery life of up to 7 days (varies with use and other factors); charge time (0 to 100%) 2 hours
Choose from 15 plus exercise modes like run, bike, swim, yoga, circuit training and more, set a goal, and get real time stats during your workouts to see how you can keep getting better
Automatically record time spent in light, deep and REM sleep stages, see Activity trends, healthy insights, and personalized guidance in one place with Fitbit today. Operating temperature is -10° to 45° Celsius
Swim proof and water resistant to 50 meters, so you can track swims and wear in the shower; we do not recommend wearing charge 3 in a hot tub or sauna; also connect to Smartphone GPS for real time pace and distance during outdoor runs and rides
Stay connected to your day with everyday apps for weather and more and get called, text and smartphone app notifications on your wrist; small wristband fits a wrist between 5.5 to 7.1 inches; large wrist band fits a wrist between 7.1 to 8.7 inches