Compatible with any Bluetooth device that supports heart rate monitoring, the COROS heart rate monitor delivers over 38 hours of continuous, accurate heart rate monitoring to keep track of your workouts in total comfort and without distraction.

Easier to wear than a chest strap, the soft fabric band sits flat around your arm and is held in place by its textured surface. The low-profile design prevents it from snagging on clothing or gym equipment, allowing you to forget you're wearing it.

You can adjust the placement and perfect tension of the durable elastic band on your arm by simply sliding the buckle until it's snug. The secure hook-and-loop closure allows for quick removal of the sensor for easy washing of the band.

The next-generation multi-channel optical sensor provides high signal quality. Housed in a durable yet stylish body and protected under a scratch-resistant cover, the advanced sensor will provide reliable and accurate heart rate data for years to come. Optical heart rate sensors work best when held firmly against the skin. The band is designed so that the sensor sits flush against the arm and blocks out external light to keep the signal quality strong, regardless of your activity.

With built-in wear detection, the COROS heart rate monitor automatically turns on and off based on when it's being worn. This allows it to automatically connect to your paired devices every time you start training.

• Coros Heart Rate Monitor
• Dimensions: 42.5 x 28.4 x 9.1mm
• Approximate weight (device only): 9.7 g
• Approximate weight (device+strap): 19 g
• Material: Polyester fiber, nylon and elastane
• Sensors: 5 LED lights with 4 photodetectors
• Arm size: 18 - 32 cm
• Wearing position: Biceps
• Bluetooth wireless connection
• Compatible devices: Bluetooth compatible devices that receive heart rate data. Supports 3 devices to be connected simultaneously
• Data Sync: Real-time heart rate data
• Waterproof: 3 ATM
• Working Temperature: -20°C to 50°C (-4°F to 122°F)
• Storage Temperature: -20°C to 60°C (-4°F to 140°F)
• Battery in use: 38h
• Battery standby: 80 days
• Battery capacity: 55 mAh
• Estimated charging time: 2 h
• Charging cable: USB Type-A