Rockwell Men's 'CF' Swiss Quartz Stainless Steel and Leather Dress Watch, Color:Black (Model: CF104) Precise Swiss-Quartz movement Ultra strong mineral glass dial window helps prevent scratches Case diameter: 45 mm (not including crown) Hardened alloy case with genuine leather band Water resistant to 330 feet (100 M): suitable for snorkeling, as well as swimming, but not diving