POLAR H10 Black M-XXL Heart rate sensor

The black POLAR H10 Black M-XXL heart rate sensor provides accurate insight into your heart rate during every workout, whether you're running, cycling, or at the gym. Easily connect it via Bluetooth to your smartphone and track everything in the Polar Flow app, from your current heart rate to your heart rate zones. Because the measurement is done via a chest strap, you get consistent and precise data, even during intensive sessions. The waterproof design allows you to train even in the rain or while swimming. With a weight of 39 grams, you'll barely feel it, and the included CR2025 battery ensures long-lasting use.