CB01 GMT 90

100% Circularly produced
100% Recycled Stainless Steel – 1.4441 PuReSteel ®
39mm diameter
Repurposed Soprod  C125 automatic GMT movement
200m-600ft water-resistant
Handmade sustainable leather strap
87.59% sustainability score
100% Swiss made

CHF 1,450.00


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5 years international warranty
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Design DNA

The CB01 GMT NK90 is a raw and "naked" watch by design an technical conception. Essential in all its lines and finishes. It has been designed and produced to have the least impact on the environment. Only the functionally necessary has been produced. Nothing is superfluous, like it should be for a tool watch.

Orange GMT arrow-hands are iconic. On dashboard instruments, manometers and tools, the orange color is commonly used to identify a precise function thanks to its readability.

The 1990s evoke the last era of mechanical devices; the first website went online in 1991, then things started to change. Today, displays have become mainly digital.

87.59% Sustainability score

The CB01 GMT's construction, production process and local supply chain give it an 87.59% sustainability score. This makes it 2.09 times more sustainable than a comparably priced series watch.

Download the full sustainability report from the deep dive section

Circular production

When we first approached the project, we thought that we just had to use recycled materials to succeed. Soon we’ve realized that a true sustainable project is much more than that. It's about finding what is needed from an existing “circle”, transform it into a new “circle” and, finally, make it ready for its future “circle”. 

In fact, to produce in cycles.


"Through this watch, I try to do my job in a more virtuous way. It aims at pushing the watchmaking industry to question its design and production processes, and consider that changes are needed. And possible.

It is a tribute to the women and men whose work contributes to a better future, and an ode to craftsmanship and the people of watchmaking. A concrete step towards a more sustainable watch industry".  Cedric Bellon


Discover the project

The watch


Type of Production

100% Circular
Swiss made
In-house production

Quality of production

Top grade

Case Size

39mm diameter

Case Features
  • 100% recycled 316L PuReSteel® stainless steel case-body
  • Repurposed 316L stainless steel from our factory scrap
  • Sapphire crystal
  • 24H inner dial ring
  • Brushed case-body, circular brushed lugs with polished bevels. Circular brused case-back
  • Vertically brushed dial with circular brused 24h ring
  • Double layer 100% recycled PuReSteel® vertically brushed dial
  • White Superluminova ® on H, M and GMT hands and on the indexes
  • Black PVD coated dial. Coated exploiting unused machine capacity 

Hand-made genuine leather strap. Natural tanning without any chemicals. Stitching with natural linen cord and water-based glue. Pin-buckle made of repurposed 316L stainless steel from our factory scrap.

Strap width


Water Resistance


Sustainability score

2.09 times more sustainable than a similar category Swiss made series watch

The movement

Repurposed Swiss made automatic Soprod C125 

Hours, minutes, seconds, date and 24H GMT hand


Mechanical, self-winding, 28’800 bhp/4Hz

Power Reserve
Up to 42 hours


Received my watch. Superb! I really love it! Very well balanced design and perfect size.


France, Angel for the CB01 GMT