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
Garmin Edge 830 Sensor Bundle, Performance Touchscreen GPS Cycling/Bike Computer with Mapping, Dynamic Performance Monitoring and Popularity Routing, Includes Speed and Cadence Sensor and HR Monitor Sensor Bundle GPS Bike Computer
Polar H10 vs. Garmin HRM Pro: Which heart rate monitor is best? - Reviewed