Coros Heart Rate Monitor Easy to wear, nothing to distract. Using optical heart rate sensors, measuring blood flow in capillaries this heart rate monitor gathers data with accuracy. Precise Data The Coros heart rate monitor is compatible with any Bluetooth heart rate-enabled device, delivering over 38 hours of continuous accurate heart rate monitoring to track your workouts in distraction-free comfort. The latest generation multi-channel optical sensor provides high signal quality. The sensor has been housed in a tough yet sleek body with a scratch-resistant finish, this advanced sensor will deliver reliable and accurate heart rate data, so you can track your progress for years to come. Flexible Fit Helping you find the perfect fit, the heart rate monitor uses a durable elasticated band that has a sliding buckle, for the best results this needs to be tightened until it feels snug. This is then secured by a velcro enclosure which also enables you to quickly