G.F.J. Calibre 135

Following the award-winning revival of the G.F.J., ZENITH unveils a new chapter in this collection dedicated to pure chronometry. Named after the initials of founder Georges Favre-Jacot, the G.F.J. is not a commemorative gesture, but a statement of intent: a return to the very foundations of precision watchmaking. First introduced with the rebirth of the legendary Calibre 135 and honoured with the “Chronometry Prize” at the Grand Prix d’Horlogerie de Genève in 2025, the G.F.J. established itself as a contemporary expression of ZENITH’s historic mastery of observatory timekeeping. Today, it returns in a new limited edition of 161 pieces in yellow gold, featuring a striking bloodstone dial. More than a new material execution, this edition reinforces the G.F.J. as the contemporary home of the Calibre 135: a movement whose story continues to unfold.