Heavy-duty, with a touch of radiance. The wide case, measuring 46.1 mm, features high-visibility bar index marks to ensure an easy read. The sunray dial is a striking complement to the bezel's metallic finish, coming together in a design that is bold and tough. As much function as design, water resistance up to 100 meters, three-year battery life, LED backlight, and more deliver what you need on your most active days. Case / bezel material: ResinResin BandResin Glass100-meter water resistanceLED lightAfterglowRegular timekeeping:Analog: 3 hands (hour, minute, second)Accuracy: ±20 seconds per monthApprox. battery life:3 years on SR626SW (Analog)3 years on CR1616 (Light 9 [sec/day])Size of case : 50.5 x 48.1 x 13.6 mmTotal weight : 48 g