Excelvan Men's Black Leather Luxury Skeleton Dial Hand-Wind Up Mechanical Wrist Watch 100% Brand new Leather band, lovely case, stainless steel case; Special style, skeleton, silver movement, the frame can rotate. Powered by manual mechanical, no battery is required. Daily water resistant. (not for shower or swimming) Case Diameter: about 4.0*4.0cm Band Size:about 25.0 cm Case Material: Stainless steel