The COOSPO Heart Rate Monitor Chest Strap H9Z, HRM Bluetooth 5.0 ANT+, with its robust chest sensor, has been meticulously designed to provide accurate heart rate monitoring. This innovative product utilizes the latest technology, including Bluetooth 5.0 and ANT+, ensuring reliable and responsive connectivity. The rechargeable battery included offers a long-lasting runtime, allowing you to stay active without worrying about charging. The sleek and comfortable design of the chest strap ensures a secure and discreet fit during your workouts or daily activities. COOSPO has truly outdone themselves with the H9Z, delivering top-notch heart rate tracking that is both accurate and user-friendly.