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

Price: $99.99 - $74.99
(as of May 19, 2022 05:06:42 UTC – Details)

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
Get vibration alerts for all notifications, including calls, text messages and more (text replies available for Android device users)
Battery life keeps up with you; lasts up to 7 days (excluding Pulse Ox sleep tracking) and is safe for swimming and showering, too