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

Its pros: + Reference accuracy. + Almost weightless, nothing presses. + I have been using it for more than a year 3 times a week, the battery still holds. + The Polar Flow app on iPhone works perfectly, never lost connection. + The price does not increase. A year ago I bought for 7741, now the price is about the same 7800. Its cons: - The Polar Flow app for Android is stupid. Authorization flies, once a month it loses connection right during a workout. If the application is minimized, it also loses connection.