Seiko Prospex Automatic Scuba Diver's  SRPA79J1 

Caliber: 4R36  Automatic  24 Jewels

Made In Japan

Stainless Steel Case & Bracelet Black Dial Luminous Hands And Markers Screw Down Crown with screw in Case Back Deployment Clasp 200M Water Resistance Case width: 51.7mm Case Thickness: 13 mm