Coros Heart Rate Monitor Best Seller A generous toe box and

A generous toe box and quick drying frame are paired with a monoblock EVA midsole packed with Sensor³ technology for optimized cushion

The filter — light and compact — screws on top so you can drink right from the flask

With just the right chafe-free fit and form

Magnesium carbonate

Max range of motion

Coros Heart Rate Monitor Best Seller A generous toe box andComfortable 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. Arm Size: