Movement: Asia 7750 Valjoux Working Chronograph movement, Insigna Rotor, Working Regulator, 28800bph Functions: Hours, Minutes, Seconds : Running Secs at 12.00 subdials, Chronograph : 9.00 subdial - minute counter, 6.00 subdials, hour counter 2.00 pusher - start/stop chrono, 4.00 pusher - resetDay and Date at 3.00 set via crown ( Mag Crystal Mounted on Dial)Note : Updated Black surround at DatewheelDimensions : Dia 42mm x 15.5mm Thk Material : 1 piece forged case construction, solid 316 stainless steelBack : Close case back with Detail EngravingCrown : One-piece Screw down crown with o ring Crystal: Sapphire crystalWater-resistant