COROS Heart Rate Monitor

Heart rate monitors that use traditional chest straps can cause discomfort, while wrist-based readings may be inaccurate and slow. The COROS Heart Rate Monitor fits comfortably and snugly on the upper arm, and the advanced sensor boasts 5 LED lights with four photodetectors, providing accuracy equivalent to its chest-based cousins. With a 38-hour active battery life, the COROS HR Monitor will last through the wildest of single pushes, and the 80-day stand-by mode will ensure it's ready for your next adventure at the drop of a hat. The stretchy armband is comfortable for all-day use, and weighing under 20 grams, you'll hardly notice it's there during your next training run or race.

• The armband will accommodate 18-32cm of powerful biceps.
• Charging time is less than two hours, and the magnetic connection is user-friendly.
• The advanced sensor provides real-time heart rate data.
• Bluetooth connectivity for both COROS and non-COROS devices
• 3 ATS of water resistance will last through the hardest of downpours.