Polar H1 Heart Rate Sensor Watch with Pro Strap, Medium-XXL, Black

A streamlined heart rate sensor that connects to Polar heart rate monitors using 5 kHz transmission. Comes with Polar Pro Strap. Comfort is the key when training. That's why Polar created Polar H1, the slim heart rate sensor that comes with Polar Pro Strap, a comfortable textile chest strap with interference-blocking extra electrodes, slip-preventing silicone dots and a secure buckle that keeps the strap firmly in place. With Polar H1, you can focus on your workout, not on your gear.