Seiko Prospex Automatic Diver's 200M SRP777J1 Automatic Movement Caliber: 4R36 (24 Jewels) Water Resistance - 200M Made In Japan Stainless Steel Case with screwdown crown/caseback Silicone Strap with buckle clasp Hardlex Crystal Black Dial Luminous Hands And Markers Unidirectional elapsed Timing Bezel Day And Date Display Case reference: 4R36-05H0 Case Diameter: 45mm Case Thickness: 13mm 31-22S31592-TW