Casio Men's 'Edifice' Quartz Stainless Steel Casual Watch, Color:Silver-Toned (Model: EFR538D-1AV) 100m water resistant, chronograph, date display, mineral glass, screw lock back, luminous hand Luminous dial markers, battery: sr621sw (3 hands and 3 dials) approx. Battery life: 2 years, module: 5150 Quartz Movement Case Diameter: 46.5mm, Size of case:56.6 x 49.0 x 12.7 millimeters Water resistant to 100m (330ft): in general, suitable for swimming and snorkeling, but not diving