Model : Brushed Stainless Steel Casework, BlackDial, Lume Blue Numeral/Dot Markers on Rubber Strap with Insignia BuckleMovement: Japanese Quartz Working Chronograph Movt Functions: Hours, Minutes, ( Time Setting via Crown at 9.00) Seconds : Running Secs at 12.00 subdials, Chronograph : 3.00 subdial - Minute Counter 8.00 Extended Pusher - start/stop chrono 10.00 pusher - reset Dimensions : Dia 46mm x 16.5mm 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 CoatedWater-resistant