Seiko Prospex Automatic Diver's 200M Automatic Movement Caliber: 4R36 (24 Jewels) Water Resistance - 200M Made In Japan Stainless Steel Case with screwdown crown/caseback NATO Strap (Black) Hardlex Crystal Blue Dial Luminous Hands And Markers Unidirectional elapsed Timing Bezel Day And Date Display Case reference: 4R36-05H0 Case Diameter: 45mm Case Thickness: 13mm 31-22S3115592-TW