BOS Men's Automatic Skeleton self-Wind Mechanical Watch Black Stainless Steel Band Cycle racing style design,fashion and special,analog display High quality mechanical movement,316L high quality stainless steel case and butterfly clasp,easy to wear and comfortably; High hardness synthetic sapphire surface, 41 mm case diameter Waterproof of 30M(99 feet), withstands rain and splashes of water, but not showering Gift-wrap available. 1Xwatch, 1Xband adjust tool, 1Xgift bag in 1 shipping package.The shipping weight is 1.25 pounds.