PACIFISTOR Men's Analog Silver Case Mechanical Skeleton Dial Watch with Black Leather Band Movement (Caliber): Manual Hand-winding Semi-automatic Movement Material:Stainless steel case with synthetic-sapphire dial window,Anti-Scratch glass,Comfortable PU strap Size of case diameter (mm): 46;Thickness of case (mm): 16 Water resistant to 30 m (99 ft):Perfect for all kind of sports, indoor and outdoor activities or daily use.But not suitable for shower, bath and swimming. 1 Year Warranty and 30 days exchange, returns and refunds accepted.