Used handful of times.

HIGH-ACCURATE ±1BPM HEART RATE MONITOR: Patented optical sensor technology for highly accurate heart rate monitoring. It support continuously measure real time heart rate data ±1bpm during exercise.The armband also can track and capture training zones and calories burned on your smartphone or tablet with compatible training apps.

✅HEART RATE ZONE TRACKING: Coospo heart rate monitor armband HW807 can monitor HR zones with different color LED light, let you see your exercise status more intuitively. Also support heart rate variability (HRV) function.

✅COMPATIBLE with BLUETOOTH5.0 & ANT+: Great for work with smartphones,Garmin, Wahoo sport watches/gps bike computers/fitness equipments and many other devices which support Bluetooth4.0 & ANT connection.

✅RECOMMENDED APP: CooSpo Bluetooth heart rate armband can works well with APP like Wahoo Fitness/Strava/Polar Beat/DDP Yoga/HR monitor/CooSporide and more than 200 APPs.

✅COMPATIBLE with GPS BIKE COMPUTER: With heart rate ANT+ bluetooth function, HW807 armband worked well with Garmin/Wahoo/CooSpo/XOSS and other brand bike computers. Enjoy your riding with coospo armband heart rate monitor.

✅COMPATIBLE with Sports Watches: CooSpo armband heart rate monitor also can works with most BLE / ANT+ sports watches, provide more accurate heart rate data for your training.

✅COMPATIBLE with GYM EQUIPMENTS: HW807 armband heart rate monitor support directly work with Peloton bike, Concept2, Nordic treadmill, Bowflex Max Trainer/ Pro-Form treadmill/ iFIT treadmill/Echelon