Model : PVD Black Coated Polished Stainless Steel Caseset PVD Black Smooth Stainless Steel Bezel, Black Carbon Dial, Black Subdials, Steel Sticks Markers on Leather Clad front Rubber Base Gummy Strap with Insignia Single Fold Deployant BuckleMovement: Japanese OS20 Working Chronograph movement, Functions: Hours, Minutes,24 hour indicator (3.00 Subdial) Date at 6.00 set via crown Chronograph : 9.00 Subdial - minute counter 2.00 pusher - start/stop chrono, 4.00 pusher - reset Dimensions : Dia 45mm x 11mm Thk Material : 1 piece forged case construction, solid 316 stainless steel Back : Solid Case back with and detail Engravings Crown : One-piece pull out crown with o ring Crystal: Sapphire Crystal Water-resistant