BINLUN Automatic Watches for Men Outdoor Stainless Steel Waterproof Mechanical Watch Movementimported Japanese Miyota automatic mechanical movement, self winding Scratch resistantsynthetic sapphire crystal, stainless steel case and band, hidden push button clasp Waterproofwater resistant to 50m (164ft): withstands rain and splashes of water, shower and swim in shallow water zone Features calendar day date, strong luminous hands, 3-hand analog, transparent exhibition case back Specification case thickness: 0.47in (12mm), case diameter: 1.65in (42mm), band width:0.79in (20mm), valid band diameter: 7.87in (22cm). Attention: if you have big hands, you'd better measure your wrist diameter to see if the band matches or not before placing order. You can leave a message if necessary, we can customize it extra-long to fit your size.