Model : PVD Black coated Brushed Stainless Steel Case, Duo Time Zone Black Sandwich Dial with Sticks/Numeral markers, Rubber Strap with Double Fold Deployant Clasp Movement: 2 x Japanese OS10 Movement (Set Via 1.00 and 7.00 crowns) Functions: Hours, Minutes, Seconds, 2nd Time Zone Dimensions : Dia 50mm x 18mm Thk Material : 1 piece forged case construction, solid 316 stainless steel, PVD Black Coating Back : Solid case back with Detail Serial Insignia Engraving Crown : One-piece screw down crown with o ring Crystal: Synthetic Sapphire, AR Coating Water Resistant