We do sports only occasionally about 2 times a week and have bought the clock to control also the pulse. There are various training functions such as cycling, jogging and walking. Unfortunately, while the pulse is measured simply not right. When walking the whole time I was given a pulse of 180 displayed. I then measured it manually and it was at 70. The pulse measurement is simply extremely inaccurate and just unusable for Sport. Too Bad. The clock itself is otherwise OK.