Precise Data, Total Comfort.

The COROS Heart Rate Monitor (HRM) is a sleek, arm-worn heart rate sensor designed for optimal comfort and continuous tracking. Unlike traditional chest straps, this monitor is made with soft, durable fabric that lies flat and secures snugly, providing a distraction-free experience even during the most intense exercises.

With up to 38 hours of continuous tracking, it delivers accurate readings via its advanced multi-channel optical sensor, protected under a scratch-resistant cover. Easy to wear and maintain, the monitor uses a reliable velcro and sliding buckle system, while automatic wear detection powers it on and off for seamless functionality. The COROS HRM is compatible with most Bluetooth heart rate-enabled devices, syncing effortlessly with up to three devices, allowing you to monitor your progress in real-time on your COROS watch, app, or other Bluetooth-compatible devices. Built for endurance, the COROS Heart Rate Monitor offers 80 days of standby and quick magnetic recharging, keeping you focused on what truly matters – your fitness journey.

Features

• Pairs with Bluetooth heart rate-enabled devices, including COROS and non-COROS watches, indoor trainers, and bike computers
  
• 38 hours of continuous use or 80 days standby on a single charge
  
• Soft fabric band with secure velcro closure and sliding buckle for an adjustable, low-profile fit
  
• A multi-channel optical sensor designed for the upper arm to capture highly accurate heart rate data
  
• Powers on and off automatically based on wear, making it easy to start and end workouts
  
• The Sensor is easy to remove for washing the band, keeping it fresh and durable

Specifications

• Dimensions: 42.5 x 28.4 x 9.1 mm
• Claimed weight (Sensor Only): 9.7 g
• Claimed weight (Sensor Band): 19 g
• Materials (band): Polyester fibre, nylon, spandex
• Sensors (Optical Heart Rate Hardware): 5 LED lights with 4 photodectors
• Fit (Arm size): 18-32 cm
• Wearing position: Bicep
• Wireless connection: Bluetooth
• Supported devices: Bluetooth-compatible devices that receive heart rate data
• Data Sync: Real-time heart rate data
• Water resistance: 3 ATM
• Working temperature: -20°C to 50°C
• Storage temperature: -20°C to 60°C
• Charging temperature: 0°C to 45°C
• Battery (Activity mode): 38 hours
• Battery (Standby): 80 days
• Battery capacity: 55 mAh
• Charging time: Less than 2 hours