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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
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HiFiT Heart Rate Monitor Chest Strap, ANT+Bluetooth 5.0 IP67 Waterproof Heart Rate Sensor with Chest Strap for Sport Running Cycling Gym and other Sports, Works with Fitness Apps, Cycling Computers : Amazon.co.uk:
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