COROS Heart Rate Monitor M Wave Rider 27 so you can move freely—whether

so you can move freely—whether you're sprinting

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so you can enjoy them for many wearings to come

rabbitKNIT brief liner: 87% polyester & 13% spandex

COROS Heart Rate Monitor M Wave Rider 27 so you can move freely—whetherComfortable 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.