Stiive Smart Watch, Touchscreen Fitness Tracker with Heart Rate & SpO2 Monitor, Sleep Tracking, 14 Sports Modes, IP68 Waterproof Pedometer Compatible with iPhone & Android Phones
- 【❤24/7 Heart Rate Monitor & Sleep Monitor】This smartwatch has SpO2 monitor and 24-hour heart rate monitor. The sleep monitor records your light sleep, deep sleep, and REM periods at night. And analyzes your sleep quality. 【Wear the device 1 finger width below your wrist bone. And wear on the 2 fingers width of your wrist while exercising or observing blood oxygen levels. DON'T WEAR WATCH TOO TIGHT】.