Model : SS Case, Single Roll Square Cut Diamond Crested Bezel, Diamond Crestings at End Links, Black Dial, White Subdials, Diamonds Markers on Leather Strap With Single Fold Deployant2008 Upgrade Engraved Rehaut ROLEXROLEX with M Serial Nos.. Movement: Asia 7750 Valjoux Working Chronograph movement Updated Decorated Insignia Rotor, 28800 bph, New Improved 29J Version Functions: Hours, Minutes, Seconds : Running Secs at 6.00 subdials, Chronograph : 3.00 subdial - minute counter, 9.00 subdials, hour counter 2.00 pusher - start/stop chrono, 4.00 pusher - reset Dimensions : Dia 40mm x 13.5mm Thk Material : 1 piece forged case construction, solid 316 stainless steel Back : Close case back with Hollogram Crown : One-piece Screw down crown with o ring Crystal: - Sapphire Crystal Water-resistant