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

Great stuff. Put on and ran. Incredibly convenient to control the load. Even if the track supported 5 kHz, it would be absolutely super. Pros: It measures accurately, you don’t feel it on the run, you easily forget about it. The standard application for iOS is intuitive and does not even require registration. Different cons: If there was also an accelerometer in it - counting steps and that's all - it would be absolutely excellent.