Have gained for various sports to me this clock. Have you for biking, jogging and Kajak'en in use. Through the plastic strap the clock takes no sweat, so it does not catch sometime to stink (was with my G-Shock to 3 years not more bearable! Yes ... wash with and disinfect) The stopwatch is quite useful, but not trigger as with many other clock by a central button, but only with the "watch hand" wrist. Waterproof As always, battery 10 years ... in a nutshell: It makes what I expected. For the price a smooth recommendation. Oh yes: The design I personally find very appealing. But beware: The watch glass is plastic ..... see price!