COROS Heart Rate Monitor Shop By Brand_GREENLIFE At the intersection of lightweight

At the intersection of lightweight

The Harley Trilby is an ultra-lightweight & durable hat to wear all day and every day

Stretch-knit 20D polyester knit is very soft and comfortable

The primary electrolyte lost in sweat

COROS Heart Rate Monitor Shop By Brand_GREENLIFE At the intersection of lightweightCOROS Heart Rate Monitor 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. 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