COROS Heart Rate Monitor Heart Rate Monitors : Get precise data and total comfort with the COROS Heart Rate Monitor! Compatible with any Bluetooth heart rate-enabled device, this heart rate monitor provides over 38 hours of continuous and accurate heart rate monitoring to track your workouts. Enjoy distraction-free comfort as the soft fabric band lays flat around your arm and locks in place. Housed in a tough yet sleek body and protected under a scratch-resistant cover, the advanced sensor delivers reliable and accurate data. Comfortable to wear and easy to use, the COROS Heart Rate Monitor supports your goals! Comfortable and easier to wear than a chest strap. Easy to adjust the fit and remove the sensor for quick cleaning. Multi-channel optical sensor for precise measurement. Up to 3 simultaneous connections with Bluetooth-enabled devices. Wear detection allows for automatic device pairing for new workouts. 38 hours of full operation or 80 days in standby mode on a single charge. Rechargeable with a magnetic USB charging cable.