COROS Heart Rate Monitor Band

COROS Arm-Band Heart Rate Monitor — Cut the bulk, not the performance. This sleek, low-profile optical HRM band wraps comfortably around your bicep to deliver chest-strap-level heart rate accuracy—no strap tight across your chest, no discomfort. Five LEDs + four photodetectors track your pulse with precision, while the soft, adjustable fabric band keeps the sensor flush against your skin. With 38 hours of run-mode battery life, simultaneous connections to up to three Bluetooth devices, and wear-detection to power on only when in use, it's built for serious training without the fuss. Water-resistant (3 ATM) and easy to clean too—your workouts just got smarter.