BOS Men's Mechanical Skeleton Gold Case White Dial Watch Stainless Steel Band 9010 Fashion and Anti abrasion, gold color skeleton dial to see the movements; High quality self-wind movement,316L high quality stainless steel case and band; Synthetic sapphire surface, anti-scratch; Stainless steel butterfly clasp,easy to wear and comfortably Waterproof of 50M, withstands rain and splashes of water, but not showering