Foreign trade series of men's luxury business machinery's hollow out table Product information Product name: transparent bottom hollow out mechanical watches Product number: M1406 Suits the crowd (sex) : neutral table Mechanical movement description: high quality's serie a campaign Case diameter: 40 mm Case thickness: 13 mm Band width: 20 Surface description: Roman numerals hollow out Table back description: optical transparent glass bottom cover， screw lock bottom On the surface of the glass: high density organic glass， hard wear-resisting， clear and bright Band material: high quality PU leather strap， hard and wear-resistant Clasp material: solid gold plated stainless steel buckle Turnning: 56 g Daily life waterproof， can't touch the water area， such as bathing， swimming