Only times: already had three heart rate monitors with chest strap. All (in my opinion) terribly. Property now already four Pulsuhren tried without BG and am "15 Beurer PM" absolutely convinced of this. Easy to handle, fast, correct display and waterproof. But that was the case, was not also my predecessor (Sanitas) fine. I run so about 5 - 6 times a week and "play" with the clock almost daily. For the price can only be recommended! Try it out.
