Brand Rolex Model Explorer II Reference 216570 WSO Gender Men’s watch Movement Kinetic (Automatic) Case Diameter 42 mm Case Material 316 Grade Stainless Steel Band Material 316 Grade Stainless Steel (Oyster) Dial Color White 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.