Coros Heart Rate Monitor (Arm) Colour:Grey built for a fast

built for a fast

and integrated arch support is built in

built for road racing from 10K to marathon distance with a lightweight

Approved by FINA

Made with a blend of 100% Merino wool and an interlocking knit

Coros Heart Rate Monitor (Arm) Colour:Grey built for a fastComfortable 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.