Invicta Men's 6427 Reserve Collection Akula GMT Black Polyurethane Watch Precise Swiss-quartz movement Durable flame-fusion crystal; black ion-plated stainless steel case; black polyurethane strap 60 second subdial; date function Black sunray dial with luminous hands and hour markers; gmt; big date display at 6:00, 7:00 and 8:00; stainless steel lugs Water resistant to 330 feet (100 M): suitable for snorkeling, as well as swimming, but not diving