Best clock for beginners, if you only measure the heart rate, or want to see calories burned. The chest strap is working properly and soon came in contact at the clock on the wrist. The description is understandable only in the setup menu on height, weight, sex and age entered (and Recommendation) enter the upper and lower value of the blood pressure. 220 minus age results in, for example the upper value. Stopwatch and there's also of course, the time of day.
