The COROS Heart Rate Monitor is worn on the upper arm rather than the chest, giving accurate, continuous heart rate data without the discomfort of a strap round your ribs. It works with any Bluetooth heart rate-enabled device, so it pairs just as happily with a bike computer, smart trainer or another brand of watch as it does with COROS.

The soft, textured fabric band lies flat and grips without slipping, and the low profile will not snag on clothing or gym kit. Slide the buckle to set the tension, and the velcro closure lets you pop the sensor out so the band can go in the wash. Inside, a multi-channel optical sensor sits under a scratch-resistant cover, and the band cradles it flush against the skin to keep stray light out.

The upper arm has better blood flow than the wrist, which is why COROS say it matches a chest strap for accuracy. One charge gives 38 hours of use or 80 days on standby, wear detection switches it on and off automatically, and it can connect to up to three devices at once. A magnetic USB charging cable is included.

Features

• Arm-worn optical sensor: comfortable alternative to a chest strap
• Latest multi-channel optical sensor under a scratch-resistant cover
• Works with any Bluetooth heart rate-enabled device
• Connects to up to 3 devices at once
• Wear detection for automatic power on/off and pairing
• 38 hours of use or 80 days standby per charge
• Battery level shown on COROS watches and in the COROS app
• Sensor removes easily so the band can be washed
• Magnetic USB charging cable included

Specification

• Sensor: multi-channel optical
• Connectivity: Bluetooth, up to 3 simultaneous connections
• Battery: 38 hours use, 80 days standby
• Charging: magnetic USB cable (included)
• Fastening: elasticated band, slide buckle and velcro
• Colours: Grey, Lime, Orange, Jakob Ingebrigtsen Edition