This sport edition Bulova BVA-Series 100 automatic features bolder hands and markers, a rotating bezel, and 100 meters water resistance. Black face highlighted by bold white hands and markers with subtle red accents and a red sweep second hand. As will all Bulova automatics, this model sports the open window into the movement at the 7 o'clock and a full glass exhibition back so you can see the full movement . Larger hands and markers with luminous accents on hands and markers for low-light visibility 21 jewel automatic, self-winding mechanical movement - winds from the motion of your wrist - no batteries required. One way rotating bezel allows you to set and then measure elapsed time Stainless steel case and stainless steel bracelet with secure fold-over buckle Curved crystal magnifies face and is scratch resistant 100 Meters water resistant (330 feet) Approximate case dimensions: width 40.5 mm (about 1.6 inches) and 12 mm thick) Backed by Bulova's 3 years manufacturer's warranty