Amazon.com : CooSpo Bluetooth ANT+ GPS Bike Computer Cycling Computer Speedometer Cadence Sensor Cycling Cadence Bike Speed Sensor Heart Rate Monitor Armband IP67 Waterproof for Peloton,Garmin, Endomondo, Strava, : Sports & Outdoors
Picked up a CooSpo chest heart rate monitor, connected it to my Apple Watch and did a strength training session to compare how my Charge 4 would do. I'm really surprised by