COROS Heart Rate Monitor, Comfort, Easy to wear, Auto-wear Detection, Precise Data, Bluetooth, 38 Hours Battery Life, Compatible with up to 3 Connections, for Run and Bike

Coros HR Monitor is a Lightweight and Accurate heart rate Monitor Developed for Runners and Athletes who want Reliable heart rate data Without using a chest strap. The heart rate Monitor is Comfortably worn on the upper arm and Provides more Stable Measurements than Wrist-based Sensors - Especially During Running and high Intensity. The Elastic band Ensures a snug and Comfortable fit. The heart rate Monitor Records heart rate data with high Accuracy and Transmits them Wirelessly via both Bluetooth and ANT+, Making it Compatible with COROS Watches, bike Computers, and most Training apps. The Lightweight and Flexible Armband stays Stable During Movement, and the low Weight makes you Almost Forget You're Wearing it. The Battery life is long, Allowing you to train for weeks on a Single Charge, and Charging is easy via USB-C (Charger Included).