Triathlon clock! So Waterproof with stopwatch. Function: easy to use. Easily. Comfortable to wear. "Glass" = acrylic and easily scratched. Bezel in diver's watch design glued aluminum ring and not to turn. This could be designmäßig and prefer to install a single-color ring. Clock is from offer price therefore in order. The list price rather for specialists (athletes) and because of the acrylic glass not for "artisans". The next clock has neat sapphire crystal back.