BINLUN Automatic Watches for Men Waterproof Stainless Steel Tourbillon Mechanical Mens Watch Movement - Japanese 21 jewels Miyota automatic mechanical movement, self wind Scratch resistant - synthetic sapphire crystal,two tone rose gold plated stainless steel bezel & band Waterproof - water resistant to 50m (164ft): withstands rain and splashes of water, shower and swim in shallow water zone Features - skeleton dial exhibiting tourbillon,luminous hands,18k rose gold plated, unique case, big face Specification - case thickness:0.43in (11mm), case diameter:1.61in (41mm), band width:0.79in (20mm), valid wrist diameter: 8.67in (22cm)