Project X Limited Edition Model : PVD Black SS Case, PVD Black Bezel, MOP Green Dial and Subdials, Roman Markers on SS Oyster Bracelet, 2008 Upgrade Engraved Rehaut ROLEXROLEX Movement: Asia 7750 Valjoux Working Chronograph movement Updated Decorated Insignia Rotor, 28800 bph, New Improved 29J VersionFunctions: 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, Thick PVD Black Coating... AntiPrint Quality Back : Display Close case back with detail Project X Engraving Crown : One-piece Screw down crown with o ring Crystal: - Sapphire Crystal Water-resistant