Invicta Men's 6637 S1 Collection GMT Black Rubber Watch Precise Swiss-quartz movement Durable flame-fusion crystal; black rubber and stainless steel case and strap 60 second subdial, 24 hour GMT dial; date function Green and white dial with luminous hands and arabic numerals; stainless steel crown and pusher Water resistant to 330 feet (100 M): suitable for snorkeling, as well as swimming, but not diving