Zenith’s G.F.J. collection was already one of the brand’s more historically loaded modern releases, but its latest version adds a more intimate layer.
The G.F.J. Calibre 135 Double Signed with Naoya Hida & Co. introduces Zenith’s new Double Signed Program, a collaborative series planned with notable watchmakers from around the world.
For the opening act, Zenith has chosen Japanese independent Naoya Hida, whose quiet, exacting approach gives the Calibre 135 a very different presence on the wrist.
At a glance
- Zenith has introduced the G.F.J. Calibre 135 Double Signed with Naoya Hida & Co. as the first watch in its new Double Signed Program.
- The 39.15mm platinum watch features a silver dial with hand-engraved markers filled with blue Japanese Urushi lacquer.
- It is limited to 10 pieces and priced at CHF 58,900, approximately £55,750.
Naoya Hida gives the G.F.J. a quieter dial language
The watch keeps the platinum case architecture of the 2025 G.F.J., measuring 39.15mm across and 10.5mm thick.
Its polished lugs have faceted edges, giving the otherwise classical case a slightly sharper profile beneath the polished bezel.
Hida’s hand is most clearly felt on the dial, where the sector-style layout is pared back and made more architectural.
The dial is silver, with hand-engraved hour markers filled with blue Urushi lacquer, a detail that adds depth without disrupting the restrained composition.
The central double signature is also hand-engraved, sitting between 12 o’clock and the central hand stack with the kind of deliberate spacing Hida collectors will recognise.
The hands follow the rounded white gold style associated with Naoya Hida’s Type 2A, while the small seconds hand is rendered in blued steel.
The Calibre 135 remains the heart of the project
Hida’s interest in the collaboration is closely tied to the movement inside the watch.
The Calibre 135 is one of Zenith’s defining mid-century movements, remembered for its success in chronometry competitions and for its status among enthusiasts of precision watchmaking.
The version used here is the modern, re-engineered manual-winding Calibre 135 introduced with the contemporary G.F.J. collection.
It runs at 18,000 vibrations per hour, or 2.5 Hz, and retains a Breguet overcoil balance spring.
The movement is COSC-certified and regulated to an accuracy of plus or minus 2 seconds per day, with an extended 72-hour power reserve.
Visible through the exhibition caseback, it is finished with Côtes de Genève, sunray brushing and chamfered edges.
A 10-piece statement for Zenith’s new collaborator series
The watch is delivered with three straps, all with a Japanese connection.
Buyers receive Himeji Kurozan leather, Wagyu leather and Japanese non-stretch denim options, allowing the watch to move between formal and more textured casual wear.
At CHF 58,900, the G.F.J. Calibre 135 Double Signed with Naoya Hida & Co. sits firmly in collector territory, especially with production limited to only 10 pieces.
It also sets a clear tone for the Double Signed Program, suggesting Zenith is looking for collaborators who can bring a distinct design philosophy rather than simply a cosmetic variation.
Details & Specifications
| Brand | Zenith |
|---|---|
| Model | G.F.J. Calibre 135 Double Signed with Naoya Hida & Co. |
| Reference | 40.1865-2.0135/01.C220 |
| Case size | 39.15mm diameter, 10.5mm thickness |
| Case material | Platinum |
| Dial | Silver with blue Japanese Urushi lacquer |
| Movement | Zenith Calibre 135, manual winding, COSC-certified |
| Frequency | 18,000 vph, 2.5 Hz |
| Power reserve | 72 hours |
| Functions | Hours, minutes, seconds |
| Water resistance | 50m, 5 bar |
| Straps | Himeji Kurozan leather, Wagyu leather, Japanese non-stretch denim |
| Price | CHF 58,900, approximately £55,750 |
| Availability | Limited edition of 10 pieces |
For collectors drawn to historical movements, independent watchmaking and disciplined Japanese design, this is a particularly focused expression of the modern G.F.J.
