Peloton Heart Rate Monitor. New in box! smoke free home. original owner. Can be worn around the chest or arm to track your heart rate during workouts. It connects to Peloton equipment and the Peloton app via Bluetooth to display your heart rate in real-time. The device is compatible with third-party fitness apps and equipment. The heart rate monitor can be used to track metrics that contribute to your Peloton Strive Score, which measures your exertion.