ANT+ Heart Rate Monitor
A heart rate monitor is a body-worn device that allows the wearer to measure his or her heart rate in real-time. Most heart rate monitors are worn around the chest and transmit heart rate data to watches or other display devices. However other types of monitors such as finger sensors, earlobe sensors, or the hand contact sensors on fitness machines may also use this device profile to transmit heart rate data. Similarly, the receiver need not be a watch but may be a cell phone, piece of fitness equipment, activity monitor, or other personal display device.