![Polar H7 Bluetooth 4.0 Heart Rate Sensor Set for iPhone 4S/5 - Size - S, Black : Amazon.co.uk: Sports & Outdoors Polar H7 Bluetooth 4.0 Heart Rate Sensor Set for iPhone 4S/5 - Size - S, Black : Amazon.co.uk: Sports & Outdoors](https://m.media-amazon.com/images/I/41eUxIiVtbL.jpg)
Polar H7 Bluetooth 4.0 Heart Rate Sensor Set for iPhone 4S/5 - Size - S, Black : Amazon.co.uk: Sports & Outdoors
![Polar H9 Heart Rate Sensor – ANT + / Bluetooth - Waterproof HR Monitor with Soft Chest Strap for Gym, Cycling, Running, Outdoor Sports : Amazon.co.uk: Sports & Outdoors Polar H9 Heart Rate Sensor – ANT + / Bluetooth - Waterproof HR Monitor with Soft Chest Strap for Gym, Cycling, Running, Outdoor Sports : Amazon.co.uk: Sports & Outdoors](https://m.media-amazon.com/images/I/71a-22C8CWL._AC_UF350,350_QL80_DpWeblab_.jpg)
Polar H9 Heart Rate Sensor – ANT + / Bluetooth - Waterproof HR Monitor with Soft Chest Strap for Gym, Cycling, Running, Outdoor Sports : Amazon.co.uk: Sports & Outdoors
![Polar H9 Heart Rate Sensor – ANT + / Bluetooth - Waterproof HR Monitor with Soft Chest Strap for Gym, Cycling, Running, Outdoor Sports : Amazon.co.uk: Sports & Outdoors Polar H9 Heart Rate Sensor – ANT + / Bluetooth - Waterproof HR Monitor with Soft Chest Strap for Gym, Cycling, Running, Outdoor Sports : Amazon.co.uk: Sports & Outdoors](https://m.media-amazon.com/images/S/aplus-media-library-service-media/f161d2a9-9574-49d1-ac58-c9b6e7b12ef4.__CR0,0,600,600_PT0_SX300_V1___.jpg)
Polar H9 Heart Rate Sensor – ANT + / Bluetooth - Waterproof HR Monitor with Soft Chest Strap for Gym, Cycling, Running, Outdoor Sports : Amazon.co.uk: Sports & Outdoors
![Polar H9 Heart Rate Sensor – ANT + / Bluetooth - Waterproof HR Monitor with Soft Chest Strap for Gym, Cycling, Running, Outdoor Sports : Amazon.co.uk: Sports & Outdoors Polar H9 Heart Rate Sensor – ANT + / Bluetooth - Waterproof HR Monitor with Soft Chest Strap for Gym, Cycling, Running, Outdoor Sports : Amazon.co.uk: Sports & Outdoors](https://m.media-amazon.com/images/I/31Z63CrVIFL._QL92_SH45_SX240_SY220_CR,0,0,240,220_.jpg)
Polar H9 Heart Rate Sensor – ANT + / Bluetooth - Waterproof HR Monitor with Soft Chest Strap for Gym, Cycling, Running, Outdoor Sports : Amazon.co.uk: Sports & Outdoors
![Polar H7 Bluetooth 4.0 Heart Rate Sensor Set for iPhone 4S/5 - Size - S, Black : Amazon.co.uk: Sports & Outdoors Polar H7 Bluetooth 4.0 Heart Rate Sensor Set for iPhone 4S/5 - Size - S, Black : Amazon.co.uk: Sports & Outdoors](https://m.media-amazon.com/images/I/61WDvqUucnL.jpg)
Polar H7 Bluetooth 4.0 Heart Rate Sensor Set for iPhone 4S/5 - Size - S, Black : Amazon.co.uk: Sports & Outdoors
Compatible heart rate sensors All Polar heart rate sensors can be worn in water. Only sensors with GymLink transmission detect h
![Newbie here. Just bought a used late-2021 C2 RowErg for $800 that included a Polar H9 + receiver. Should I sell it or keep it? I already have an Apple Watch that Newbie here. Just bought a used late-2021 C2 RowErg for $800 that included a Polar H9 + receiver. Should I sell it or keep it? I already have an Apple Watch that](https://i.redd.it/63o44g7ykmka1.jpg)