Swiss Legend Men's T8010-22 Tungsten Collection Chronograph Watch Swiss quartz movement Sapphire crystal; polished tungsten case and bracelet Chronograph functions with 60 second, 30 minute and 1/10 of a second sub-dials; date function Silver dial with luminous hands and hour markers; unidirectional bezel; screw down crown; tachymeter Water resistant to 330 feet (100 M): suitable for snorkeling, as well as swimming, but not diving