Case Thickness: 13 mm, Case Diameter: 47 mm, Band Width: 22 mm, Strap Circumference: 200+/- 5 mm Strap Material: Silicone; Movement: Digital-Chronograph; Water Resistance: 3 ATM Quartz Movement Case Diameter: 47mm Water resistant to 30m (100ft): in general, withstands splashes or brief immersion in water, but not suitable for swimming or bathing