Model : Sheen Finished Stainless Steel Case, Knurled Finish Bezel, Black Inner Bezel, Black Unitime Globe Dial, Black Subdials, Stick Markers on AntiDust Rubber Strap with Insignia Double Side Buckle, Movement: Japanese OS 20 Quartz Chronograph Movement Functions: Hours, Minutes, Secs (6.00 Subdial) 24 Hour indicator at 3.00 subdial, Chronograph : 9.00 subdial - minute counter 2.00 pusher - start/stop chrono, 4.00 pusher - reset Dimensions : Dia 48.7mm x 17mm Thk Material : 1 piece forged case construction, solid 316 stainless steel Back : 2 Piece Close case back with Sports Rim Design and Engraving Crown : One-piece Screw down crown with o ring Crystal:Sapphire Crystal Water-resistant