Case Diameter: 40mm Case Thickness: 11mm Strap Width: 20mm Movement: Citizen Miyota - OS11 Water Resistance: Waterproof up to 5 ATM (50 ft) Glass: Sapphire Coated Crystal (Scratch Resistant) Case: 316L Stainless Steel Caseback: Italian Marble Showcase Strap: Stainless Steel Bracelet