Garmin HRM-Pro™ Premium Heart-rate Monitor with Dual Transmission and Running Dynamics, Black : Amazon.co.uk: Sports & Outdoors
Garmin HRM-Pro Plus (Black/White) | Sportpursuit.com
Garmin HRM-Dual - Premium Heart Rate Monitor Chest Strap, Real Time Heart Rate Data via Bluetooth Low Energy, ANT+, Black : Amazon.co.uk: Sports & Outdoors