Armitron Men's 20/4891BISV Silver-Tone Automatic Blue Dial and Black Strap Watch 42mm silver-tone stainless steel case Black exhibition dial with silver-tone Arabic numerals at 3,6,9, and 12 Black croco-grain genuine leather strap with silver-tone buckle closure 48-hour power reserve automatic movement; watch winds automatically with the movement of your arm; requires no battery Water resistant to 165 feet (50 M): suitable for swimming and showering