The H9 hrudní pás TF black, size M-XXL of Polar is an advanced heart rate sensor, ideal for accurately monitoring heart rate during training. Made with comfortable and durable materials, it ensures a una perfect and stable fit even during intense activities. Thanks to Bluetooth and ANT+ connectivity, it easily integrates with fitness devices and apps. This strap provides reliable data in tempo real-time, supporting optimal performance and effective control of physical effort. An essential accessory for demanding athletes.