Collaborations in the modern watch space usually announce themselves loudly, but every so often one lands that feels more considered, more rooted in enthusiast logic than marketing momentum. The new C60 Trident Lumière ‘Green Fifteen’, created by Christopher Ward in partnership with Bark & Jack, sits squarely in that territory.
This is a limited project, available for just one week, developed with Bark & Jack founder Adrian Barker, who has built a reputation around practical, historically informed watch enthusiasm rather than trend chasing. That perspective shows through in how the watch has been adjusted. Instead of obvious co-branding or cosmetic gimmicks, the changes are largely functional, referential, and aimed at people who already know what they are looking at.
The foundation is Christopher Ward’s most technically advanced dive watch, the C60 Trident Lumière. The familiar 41mm Light-catcher case remains in Grade 2 titanium, keeping the profile slim at 10.85mm while retaining a professional 300-metre water resistance and helium escape valve. In other words, the core architecture stays intact, and the collaboration focuses on the details that shape how the watch is read and understood.
Those details begin with the bezel. The standard Lumière’s 5-minute dominant scale has been replaced by a full 60-minute graduation, a deliberate nod to mid-century military dive watches where precise elapsed-time measurement mattered. This style is most closely associated with the Rolex Milsub, a reference that has long been central to Barker’s own collecting interests and to the mythology surrounding utilitarian dive watches of the 1950s and 1960s.
The bezel also introduces the idea behind the “Green Fifteen” name. The first quarter-hour glows green instead of blue, color-coding the period divers historically monitored most closely. It is a small change, but one that immediately signals intent to anyone familiar with vintage military specifications.
On the dial, gloss gives way to a matte black surface with a softened granular texture. Baton markers are replaced with circular plots designed for rapid orientation, reinforcing the tool-watch direction of the project. Bark & Jack branding is present, but deliberately concealed. The logo sits below the hands in UV-activated paint and only appears under ultraviolet light rather than through conventional lume. Christopher Ward includes a small UV torch with the watch, making the detail discoverable without turning it into a constant visual signature.
Additional personal references appear on the caseback, which features a hobnail-style pattern inspired by the handle of Barker’s grandfather’s pocket knife. The watch is powered by the Sellita SW300-1 automatic chronometer movement, COSC certified and rated at minus four to plus six seconds per day, with a 56-hour power reserve. While the case is titanium, the movement is protected by a solid steel caseback that carries both the Bark & Jack logo and the engraved texture.
The watch is delivered on Christopher Ward’s Grade 2 titanium Bader bracelet with on-the-fly adjustment, alongside a fabric-textured rubber strap made in France and fitted with titanium hardware. The overall package reinforces the idea that this is not a cosmetic remix, but a considered reworking of an existing platform.
Priced at $2,995, the C60 Trident Lumière ‘Green Fifteen’ x Bark & Jack occupies familiar Christopher Ward territory, offering a technically serious dive watch with enthusiast-specific references and a tightly defined availability window. It is a collaboration that assumes its audience already understands the language it is speaking, and is comfortable letting those details do the talking.
Co-Founder & Senior Editor
Michael Peñate is an American writer, photographer, and podcaster based in Seattle, Washington. His work typically focuses on the passage of time and the tools we use to connect with that very journey. From aviation to music and travel, his interests span a multitude of disciplines that often intersect with the world of watches – and the obsessive culture behind collecting them.