Coros | Heart Rate Monitor | Grey Mile One as well as an optimal

as well as an optimal fit ensure a perfect temperature and high comfort on the foot

Smartwatch: up to 10 days (4 days always-on)

QUICK RELEASE BANDS yes (18 mm

Smocked Stitching Waistband

Mesh Venting - Mesh ventilation zones provide optimum moisture management and maximum breathability

Coros | Heart Rate Monitor | Grey Mile One as well as an optimalCompatible with any Bluetooth heart rate enabled device, the COROS Heart Rate Monitor delivers over 38 hours of continuous accurate heart rate monitoring to track your workouts in distraction free comfort. Comfortable and simpler to wear than a chest strap. Easy to adjust the fit and remove the sensor for quick cleaning. Our latest multi channel optical sensor for precise measurement. Up to 3 simultaneous connections with Bluetooth enabled devices.