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

EASY TO WEAR and FLEXIBLE FIT: The band of COROS heart rate monitor lays flat around your arm and locks in place with its textured surface. Set the perfect placement and tension on the elasticated band by sliding the buckle.
ADVANCED SENSOR and PRECISE DATA: Housed in a tough yet sleek body and protected under a scratch-resistant cover, COROS Heart Rate Monitor's advanced sensor will deliver reliable and accurate heart rate data monitoring to track your workouts in distraction-free comfort.
LASTING BATTERY LIFE: 38 hours of full operation or 80 days of standby on a single charge. View the battery level on your COROS watch or app and use the magnetic cable to quickly recharge in 2 hours.
WEAR DETECTION: With built-in wear detection, the COROS Heart Rate monitor armband automatically powers on and off based on when it is worn. Automatically connect to your paired devices every time you start a workout.