Compatible with any Bluetooth device that allows heart rate monitoring, the COROS heart rate monitor offers more than 38 hours of continuous and accurate heart rate monitoring to track your workouts in total comfort and without distractions.

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

You can adjust the perfect placement and tightness of the durable elastic band for your arm by simply sliding the buckle until it fits snugly. The secure Velcro closure allows you to quickly remove the sensor for easy washing of the band.

The latest generation multi-channel optical sensor provides high signal quality. Housed in a rugged yet stylish body and protected under a scratch-resistant cover, the advanced sensor will provide reliable and accurate heart rate data for years. Optical heart rate sensors work best when held firmly against the skin. The band is designed to hold the sensor close to your arm and prevent external light from entering to keep signal quality strong, regardless of your activity.

Thanks to integrated wear detection, the COROS heart rate monitor automatically turns on and off depending on when it is worn. This allows you to automatically connect to your paired devices every time you start training.

• Heart rate monitor Chorus
• Dimensions: 42.5 x 28.4 x 9.1mm
• Approximate weight (device only): 9.7 g
• Approximate weight (device+band): 19 g
• Material: Polyester fiber, nylon and elastane
• Sensors: 5 LED lights with 4 photodetectors
• Arm size: 18 - 32 cm
• Position of use: Biceps
• Bluetooth wireless connection
• Compatible devices: Bluetooth compatible devices that receive heart rate data. Supports simultaneous connection of 3 devices
• Data Sync: Real-time heart rate data
• Waterproof: 3 ATM
• Operating 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