Model : PVD Black Coated Stainless Steel Engineered Case, Brush Finish, PVD Coated Fixed Tachymeter Bezel, Grey Dial, Black subdial, Black Inner Bezel and Silver Accent Needles, on Black PVD Coated Stainless Steel Link Bracelet with Single Fold Over Clasp Movement: Japanese OS 20 Quartz Chronograph Movement Functions: Hours, Minutes, Seconds : Running Secs at 6.00 subdials Dimensions : Dia 44mm x 15.5mm Thk Material : 1 piece forged case construction, solid 316 stainless steel, Thick PVD Black Coating .. 5 Mils Back : Solid Case Back in Checker Flag Graphic with Detailed Serial Engraving Crown : One-piece pull out screw-down crown with o ring Crystal: Sapphire crystalWater-resistant