Urwerk's Green Mamba is weird in a way I can appreciate

86/120 bezel clicks. A sourced first look at UR-101 Green Mamba.

UR-101 Green Mamba front view on its black strap
Image: Urwerk

The green arc on the black Urwerk UR-101 looks cool. It also looks like something I would admire on somebody else's wrist much more often than I would reach for it myself. There is a lot of black case around a relatively small time display, and that is a very specific look to commit to. I'd give the Green Mamba 86 out of 120 bezel clicks.

Urwerk's official press material establishes the November 11, 2026 release, with 50 pieces planned. The Green Mamba uses a black PVD-coated steel case and a vivid green wandering-hours display. This is a source-based first look; I haven't operated the watch or tested how quickly the display becomes familiar in everyday use.

A different way to read the time

The active hour travels along the minute scale at the top of the case. Instead of finding two conventional hands in the middle, I would be looking for the hour numeral and its position along that arc. I like mechanisms that make the act of reading a watch interesting, provided the novelty doesn't become an irritation once the first few days have passed.

The green gives the display a clear boundary against the black. In the official close-ups it is quite legible, although the photographs are controlled and the watch spends a lot of its face on dark, largely uninterrupted space. I enjoy that severity visually. I am less sure I would enjoy it with everything I normally wear.

The case is 41 mm across and 10.3 mm thick. That height is much more appealing to me than a huge tower of a case would be. The round lower area and crown placement still make it an unusual shape, so I wouldn't compare the diameter directly with an ordinary round 41 mm watch and assume the fit was settled.

Interesting mechanics, ordinary ownership questions

The automatic UR-1.01V has a stated 48-hour power reserve. A black rubber strap with calfskin lining and a 30-meter water-resistance rating complete the basic specification. I wouldn't treat the rubber strap as a reason to ignore that relatively conservative water rating. The coating also makes long-term cosmetic wear and repair worth asking about before buying.

For an independent watch with a distinctive time display, service access would matter to me just as much as the initial attraction. I would want to know who handles the work, what the expected process is and how the coated case can be maintained. None of that becomes clear merely because the mechanism looks clever in a close-up.

The official quote is CHF 33,000 before tax. A verified US-dollar price, local allocation and delivery time are unknown, so this model stays off the dollar-price plot. I'd want to try reading it at a glance repeatedly, rather than studying it for a few minutes, before deciding whether the green arc is something I want to live with.

Key specs

BrandUrwerk
ModelUR-101 Green Mamba
ReferenceUnknown
PriceUnknown
AvailabilityResearched first look. Regional sale, stock, source and delivery qualifications are detailed below.
Case41 × 10.3 mm; black PVD-coated stainless steel
MovementAutomatic UR-1.01V; 48-hour reserve
DisplayWandering hours with minute scale
Water resistance30 m
StrapBlack rubber with black calfskin lining; DLC-coated steel pin buckle
Edition50 pieces
PriceCHF 33,000 before tax; verified USD price unavailable

Source-based first look; no hands-on testing of this exact release is claimed. Brand relationship is not established in the retained source record.

Sources

  1. Urwerk — release source urwerk.com
  2. Source — www.urwerk.com urwerk.com

Model and variants

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