The arm strap design offers a secure, unobtrusive fit. Its soft fabric band sits flush against your skin, avoiding the common irritation or slipping often experienced with traditional chest straps. The strap is fully adjustable and easily removable, making it quick to clean and simple to wear. Plus, with wear detection technology, the monitor automatically powers on when worn and off when removed, no buttons or extra steps needed.

At the heart of the device is COROS’ latest-generation multi-channel optical sensor, built to deliver high-quality, accurate heart rate data across any intensity level. Designed to cradle the sensor firmly against your arm, it ensures minimal interference from light or movement, giving you chest-strap-level precision in a more convenient format. The rugged housing and scratch-resistant surface mean it’s built to last, even during your toughest sessions.

With Bluetooth multi-connection capability, this monitor supports pairing with up to three devices simultaneously, making it perfect for syncing your data across a COROS watch, a bike computer, or even a training app. Whether you're training indoors, outdoors, or both, it’s the all-in-one solution for athletes looking to track performance without compromise.

The COROS Heart Rate Monitor uses a multi-channel optical sensor to detect pulse waves through your skin, delivering real-time, high-precision heart rate data. Its placement on the arm provides more consistent blood flow than the wrist, enhancing sensor accuracy. The strap ensures close, stable contact with the skin, while the design eliminates light interference, which is crucial for reliable optical readings.

The sensor features wear detection, which means it automatically wakes when worn and sleeps when removed, conserving battery and simplifying usage. With Bluetooth connectivity, the monitor can stream data to multiple devices simultaneously, ideal for multi-platform tracking during diverse training routines. The magnetic charging cable makes recharging simple and secure, while the robust construction ensures it holds up in even the most demanding environments.