A Genuine Watch was T-Loan to produce the technical drawings for this Replication.. !!! External Dimensions is 1-1 !!!! Superlume !! Updated Patek Original Calibre Design Movement Bridges ! Model : Brushed Stainless Steel 316F, , White Dial, Superlumed Hour Markers and Needles, on Leather Strap with Insignia Double Deployant Clasp , Double Release Catch Movement: Asian 7750 Valjoux Working Chronograph movement, 28800bph, Functional Regulator, Updated Patek Original Calibre Design Movement Bridges ! Functions: Hours, Minutes, Date : Correct Date Font, Adjustment via Crown Chronograph : Minute counter and Hour counter are Faux - No Functions Chronograph only can count Secs via the Big Sec Hand 2.00 pusher - start/stop chrono, 4.00 pusher - reset Dimensions : Dia 42mm x 14mm Thk ...1-1 Dimension as per GenuineMaterial : 1 piece forged case construction, solid 316F stainless steel Back : Display case back with Serial Engraving .. Crown : One-piece solid Screw Down crown with o ring Crystal: - Sapphire Crystal (Please Note Genuine watch does not have AR coating)Water-resistant