The COROS Heart Rate Monitor features a comfortable strap that sits securely on your bicep, offering an easy alternative to traditional chest straps. Using advanced multi-channel optical sensors, it delivers accurate heart rate data throughout your workout. It provides up to 38 hours of continuous use, charges quickly with a magnetic USB cable, and supports up to 3 Bluetooth connections at once. With simple fit adjustments and easy sensor removal for cleaning, it pairs seamlessly with all Bluetooth heart rate-enabled devices for a hassle-free training experience.