The Polar OH1+ Waterproof Optical Heart Rate Sensor Is ... the small electrical current your heart generates with each beat. Optical heart rate monitors, also known as photoplethysmography ...
If you don’t have a compatible Polar watch, you can use Polar H10 to track your heart rate in the pool and move your heart rate data to the free Polar Beat app afterwards.
We’ve used it many times against the latest fitness trackers and smartwatches that have landed at Wareable HQ, mainly throwing data into Strava and the Polar Beat app, which is built for heart r ...