Fitness Tracker with 24/7 Heart Rate Monitor Adopted advanced heart rate sensor, It can monitor your heart rate automatically every 5 minutes all day. You can manually track your real-time heart rate on the watch; you can also intuitively check the heart rate graph and rest/average/max/min heart rate data in the HeroBandIII app.
https://www.amazon.com/Fitness-Tracker-Waterproof-Smartwatch-Monitor/dp/B08PB9FFM8