Review on Polar H10 Bluetooth Heart Rate Monitor, Compatible with iPhone & Android - Black Chest Strap HRM by Thanh Qu ᠌

The coolest heart rate sensor that can work without a polar watch! Incl. works well in the pool (it can move out at sharp starts from the side - but this is understandable). Comfortable and practical strap. Unexpectedly keeps even at struggle for example. The phone sees the sensor very far (enough for the entire length of a typical gym). Pros below: Works with smartphone! Records one workout offline! Long battery life. Replaceable battery and firmware ate. Cons: Two programs instead of one for recording workouts - polar beat and for viewing the history of training - polar flow. I didn't understand why it was done.