Produced by TW TW Taiwan Factory Patek Philippe Perpetual Calendar Multifunctional Luxury Watch! The BJ3 model features the 9100 multifunctional imported mechanical movement! Zero repair quality. The entire case is crafted using an exclusive CNC polishing process, achieving effects identical to the original craftsmanship, with an overall improved dial texture! Diameter 41*10mm. The dial functions include: date, day, month, and true lunar phases, exuding an elegant noble aura combined with unparalleled visual enjoyment, mysterious refinement, and extraordinary craftsmanship. The style is complemented by Italian cowhide for a comfortable fit on the wrist, and the watch features an original butterfly folding clasp, exuding sophistication and class. No one truly owns a Patek Philippe; they merely safeguard it for the next generation. The best luxurious gift recommendation. Please recognize TW's exclusive quality.