Entrepreneur Zach Lu spotted wearing a Patek Philippe

Social media recently captured Zach Attack wearing the Patek Philippe Grandmaster Chime Haute Joaillerie Ref. 6300/400G-001 during an upscale dining engagement. The sighting underscores the continued allure of ultra-complicated wristwatches among collectors willing to invest in horological artistry at the highest level.

The Patek Philippe Grandmaster Chime Ref. 6300/400G-001 represents the pinnacle of the manufacture's complication engineering. Its 49.4mm case is crafted entirely from 18K white gold and features a reversible double-faced design—a technical marvel that allows the wearer to flip between two independent dial configurations. The haute joaillerie variant pictured sets 409 baguette-cut diamonds totaling 31.35 carats across the case, bezel, and lugs, creating an unmistakable presence on the wrist. The manually wound Calibre GS AL 36-750 QIS FUS IRM powers the watch, a movement comprising 1,366 individual components that deliver 20 separate complications.

Among these complications are a grande and petite sonnerie (striking mechanisms), minute repeater with acoustic alarm, instantaneous perpetual calendar, chronograph functions, and dual time zones. The complexity of this movement places the Grandmaster Chime among the most intricate mechanical watches ever produced. Water resistance stands at 30 meters, appropriate for a dress-only timepiece of this caliber. Production remains strictly limited; each example is essentially a bespoke commission.

The diamond-set iteration commands particular reverence within ultra-luxury circles, as it marries haute horlogerie with haute joaillerie—a pairing rare even at Patek Philippe's stratospheric tier. The reversible case alone took years to perfect, and the integration of nearly 1,400 gemstones without compromising movement geometry represents extraordinary craftsmanship.

Retail pricing for the Grandmaster Chime Haute Joaillerie Ref. 6300/400G-001 officially sits at approximately $5.06 million USD. Grey-market valuations have climbed substantially higher, with recent estimates hovering near $11 million, reflecting both the extreme rarity and the watch's status as a landmark achievement in contemporary watchmaking. Acquisition typically requires direct negotiation with Patek Philippe and an established collecting history.