Amazon.com : Garmin HRM-Pro, Premium Heart Rate Monitor Chest Strap, Real-Time Heart Rate Data and Running Dynamics, Black (Renewed) : Sports & Outdoors
Garmin HRM-Pro Plus - Premium Chest Strap for Recording Heart Rate and Running Efficiency Values such as Step Rate & Ground Contact Time, Treadmill, ANT+ & Bluetooth Technology, Black : Amazon.co.uk: Sports