COROS Heart Rate Monitor W 840v1 athletic fit offers a complete

athletic fit offers a complete range of motion without feeling too tight

allowing you to dash

Includes multiple pockets to fit your running essentials

you can carry this weather resistant torch and if needed

Stingrays are friends

COROS Heart Rate Monitor W 840v1 athletic fit offers a completeComfortable 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. 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.