Model : Brushed Stainless Steel Case and Blue Numeral Bezel, Black Dial, Black Subdials, Silver Stick Markers on Rubber Strap with Insignia Buckle Movement: Japanese OS 20 Quartz Chronograph Movement Functions: Hours, Minutes, Seconds : Running Secs at 6.00 subdial, at 3.00 subdial, Chronograph : 12.00 subdial - minute counter, 9.00 subdial - hour counter 2.00 pusher - start/stop chrono, 4.00 pusher - reset Dimensions : Dia 45mm x 16mm Thk Material : 1 piece forged case construction, solid 316 stainless steel Back : Close case back with Detail Engraving Crown : One-piece Screw down crown with o ring Crystal:Sapphire Crystal, AR Coated Water-resistant