Brand Rolex Model Air-King Reference 5500 Gender Unisex Movement Kinetic (Automatic) Case Diameter 34 mm Case Material 316 Grade Stainless Steel Band Material 316 Grade Stainless Steel (Oyster) Dial Color Blue Quality Japanese (Miyota) Glass Sapphire crystal Water Resistance Watches are water resistant but not waterproof, we do not recommend swimming with them or taking showers with them.