ZENITH G.F.J. Tantalum Calibre 135 Automatic 39.15mm Watch

At Watches and Wonders 2026, ZENITH unveils the most exclusive interpretation of the G.F.J. to date: a limited edition of just 20 pieces crafted in tantalum and set with baguette-cut diamond indexes. Named after Georges Favre-Jacot, the G.F.J. was conceived as the contemporary home of the Calibre 135, the most awarded observatory chronometer movement in watchmaking history. Beyond its commemorative dimension, the collection serves as a platform for exploring the full spectrum of technical refinement, extending chronometric precision into the realm of rare, high-end and inherently exacting materials. In this new execution, the disciplined architecture of the Calibre 135 is housed within tantalum, a metal whose density and resistance demand absolute control in fabrication, turning material constraint into a defining element of the watch’s character.