Polar Verity Sense - wristband with optical heart rate monitor - ANT+ Dual Bluetooth - heart rate sensor for sports with just one button - compatible with Peloton, Endomondo, Zwift, and others.

"COMFORT AND FREEDOM OF MOVEMENT: The Polar Verity Sense allows for maximum comfort and freedom of movement. Easily worn on the arm, attached to swim goggles, or worn under tight clothing on the skin. USER-FRIENDLINESS: The Polar Verity Sense is operated with just one button. Turn on the sensor, attach it to the arm or temple, and start your workout. CONNECTIVITY: With Bluetooth and ANT+, the Polar Verity Sense can communicate with many different devices. Two simultaneous Bluetooth connections are possible. VERSATILITY: The Polar Verity Sense is suitable for a variety of sports. Monitor your heart rate in real-time on a connected device or app, or record training data to transfer to your smartphone later. SWIMMING: Attached to the temple in a clip for swim goggles, the Polar Verity Sense automatically measures heart rate, distance, and pace while swimming in the pool."