Seiko SRP639K1 Men's Prospex Automatic Dive Stainless steel case & Strap 200M WR SRP639 Imported 24 Jewels Automatic Movement (Caliber 4R36), Hackable Second Hand with Hand Winding Capability Stainless Steel Case, Polyurethane Band Hardlex Mineral Crystal, Day/Date Display with Spanish Option, Luminous Markers Case Size: 46.5 mm Diameter, 13 mm Thickness Water Resistant - 200 M, Screw Down Crowm and Case Back