Swiss Legend Men's T8010-11 Tungsten Pro Collection Chronograph Watch Precise Swiss-quartz movement Scratch-resistant sapphire crystal; polished tungsten case and bracelet Chronograph functions with 60 second, 30 minute and 1/10 of a second subdials; date function Black dial with luminous hands and hour markers; silver-tone subdials; unidirectional outer bezel; tachymeter on inner bezel; screw-down crown; red second hand Water resistant to 330 feet (100 M): suitable for snorkeling, as well as swimming, but not diving