Strap this Garmin Heart Rate Monitor around your chest to wirelessly transmit your actual heart rate to your compatible Garmin device. Use the HRM to maximise accurate training & weight loss data. This heart rate monitor is compatible with any ANT+ Garmin device & once paired up with your device the first time, will automatically recognise it each time after that. The heart rate module is housed in the plastic front part & this sits against your skin across your chest & is held in place with an elasticated adjustable strap. The fabric strap can be removed for washing. Check out the Trekitt range of compatible devices below.