Running Watch got the birthday present. Even after 3 x Calibrate still showed incorrect distances. Have exchanged for another the clock. As well as these continually indicating wrong distances, I called Sigma and calibrated them anew as recommended by the Hotline. The problem was not solved. Ex .: In exactly the same route, it shows once again 13.54 km and 15.08 km of (actual distance is 15.4 km). The toughest difference I had with my 25 km Run: The clock showed 18.03 km of. I did not just have a pure heart rate monitor, but can also measure speed and distance information. For this, the clock appears to be unsuitable. I can not recommend it and am looking for something better.
