Garmin Bike Speed Sensor 2 and Cadence Sensor 2 Bundle, Black & HRM-Dual - Premium Heart Rate Monitor Chest Strap, Real Time Heart Rate Data via Bluetooth Low Energy, ANT+ : Amazon.co.uk:
Amazon.com : Garmin HRM-Pro, Premium Heart Rate Monitor Chest Strap, Real-Time Heart Rate Data and Running Dynamics, Black (Renewed) : Sports & Outdoors