The version you're looking at is best version in the market.A factory with lots of famous products Patek.With the size and parameters, as well as the dial as genuine.
Detailed specifications :
Factory : R8 Factory Case Material: 316L Stainless Steel Strap Material: Leather band Movement: Tourbillon movement (seagull tourbillon) Case Size: 40mm Water Resistance : 5atm Glass: Saphire crystal Function: All Functions Working. Functions the same as the genuine version.
