What happens when a pair of young French watchmakers with a penchant for Chinese craftsmanship link up with a veteran Swiss horology savant? Magic, apparently. Massena LAB, founded by longtime Swiss watch industry authority and collector William Massena, and Atelier Wen, the brainchild of Robin Tallendier and Wilfried Buiron, two French entrepreneurs steeped in Chinese culture and intent on elevating the country’s watchmaking and craftsmanship on the global stage, have joined forces for the first time. The fruit of their collaborative effort is the Atelier Wen x Massena LAB Inflection Shùo, a new 40 mm tantalum timepiece with an integrated bracelet in two variations: 10 pieces with solid 18-karat white-gold dials, and 40 dials combining 18-karat white and rose gold.

The duo behind the almost 10-year-old French Chinese company first connected with Massena, who is Swiss but based in New York, in 2023, but it wasn’t until later when Massena made a trip to China to check out the pair’s operations that the collaboration began to take form. “They came to me, and we thought of doing a collab but I said, ‘Listen, let’s try to make it a Swiss watch,’” Massena says. “So we basically took a Swiss movement, a Swiss dial made of gold, completely handmade, and made the case and bracelet in tantalum. The thing is super heavy, super hard to make.” The material has, in recent years, become a darling of the watch industry exactly for that reason—the exercise of the challenge itself is often a differentiating point in watchmaking. Plus, the pewter-like hue of tantalum has a certain appeal that can’t be achieved in other materials and it’s also prized for its anti-corrosive properties.

Taking the difficulty of working with tantalum to the next level, the case and bracelet sport an all-curved design. Inspired by Chinese architecture, it has almost no flat planes and comes with a concave bezel and ridge midcase. The material is also notoriously difficult to polish and here, the bracelet’s curved links are executed in brushed and mirror-polished surfaces, while chamfers are polished to a concave finish.

The dial, however, is the main draw to the eye. Both iterations are crafted from solid 18-karat gold with a base plate finished by Swiss engraving specialist Coralie Mercier for GT Cadrans using a tremblage technique, a hand-engraving method in which a burin is rocked repeatedly across metal to create finely grained irregular facets to create a shimmering surface. The process is so painstaking even a single mistake can ruin an entire dial. For the numerals each partner designed one half of the dial. “I just had the idea of doing what I call a California dial, which is something you find on old Rolexes from the ’40s, and usually it’s Roman numerals at the top and Arabic numerals at the bottom, and we thought of switching that and making it half Chinese and half Western Arabic,” Massena explains of the East meets West design. All of the hour markers are blue-filled to match the blued-steel hour, minute, and seconds hands—and they are custom engraved.

Beneath the beautiful dial is a fine Swiss movement from one of the country’s oldest watchmaking houses. Powered by the Girard-Perregaux GP03300, the automatic movement offers 48 hours of power reserve beating at 28,800 vibrations per hour with a water resistance of 100 meters. The shape of the bridges takes their cues from motifs representing wind in ancient Chinese paintings, while the ruthenium-plated bridges are finished with anglage, sharp exterior angles, and laser-etched waved ribs (known as côtes in French) expanding radially from the center. The rotor, plated in 5N rose gold, is also inspired by a wind motif while the screw is polished in black.

Massena says Girard-Perregaux was chosen to create the caliber as they’ve long been known to make excellent movements for some of the best names in the business. “[F.P.] Journe was using GP movements as a base, MB&F was using a base movement of GP when they started—everybody who starts in the industry starts with GP movements, so they offered it to us, and it’s a great movement,” Massena notes. “They completely personalized it for us. It’s completely bespoke…it was a really good experience to work with them.”

With only 50 available, act swiftly if you want to add one to your collection. The versions with the entirely gray-hued dial in 18-karat white gold will be limited to just 10 for Atelier Wen and Massena LAB’s top clients. The remaining 40 with a dial of 18-karat white gold with a tantalum screw-down crown and rose gold and a screw-down rose-gold crown will be first come, first serve, according to Massena.

It’s an elegant cross-cultural finale that proves interesting things can happen in horology when East and West meet somewhere in the middle.