Swiss Legend Men's 20078-SB-01 Speedster Collection Chronograph Black Rubber Watch Precise Swiss-quartz movement Scratch-resistant sapphire crystal; brushed stainless steel and black ion-plated case; black rubber strap Chronograph functions with 60 second, 30 minute and 1/10 of a second silver-tone sub-dials; date function Black dial with luminous hands and hour markers; silver-tone arabic numerals at 12, 3, and 9 Water resistant to 330 feet (100 M): suitable for snorkeling, as well as swimming, but not diving