Garmin vívosmart 4, Activity and Fitness Tracker w/Pulse Ox and Heart Rate Monitor, Midnight w/Black Band, Large (Renewed)

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 right through the night with the wrist-primarily based Pulse Ox sensor. (No longer a medical device and No longer intended to be used within the diagnosis or monitoring of any medical condition)
Fitness and health monitoring tools include estimated wrist-primarily 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
Get vibration alerts for all notifications, including calls, text messages and more (text replies to be had for Android device users)
Battery life assists in keeping up with you; lasts as much as 7 days (apart from Pulse Ox sleep tracking) and is secure for swimming and showering, too