Amazon.com : COROS Heart Rate Monitor, Comfort, Easy to wear, Auto-wear Detection, Advanced Sensor, Precise Data, Bluetooth, 38 Hours Battery Life, Compatible with up to 3 Connections, for Run and Bike-Grey :
Coros just made the most comfortable heart rate monitor I've ever tested | ZDNET
COROS Heart Rate Monitor recognized as TIME Best Invention for 2023 - endurance.biz