Model : PVD Black Coated Brushed Stainless Steel Case, Black/ White Dial, Numeral markers, Blue Needles /Indexes, Rubber Strap with Double Fold Deployant Clasp Movement: Japanese OS20 Quartz Chronograph Movement ( Set Via 12.00 Crown and 11.00 & 1.00 Pushers) Functions: Hours, Minutes, Seconds, Date (@9.00), Chronograph Dimensions : Dia 48mm x 14mm Thk Material : 1 piece forged case construction, solid 316 stainless steel Thick PVD Black CoatingBack : Solid case back with Detail Serial Insignia Engraving Crown : One-piece screw down crown with o ring Crystal: Synthetic Sapphire, AR Coating Water Resistant