The New Urwerk UR-101 Green Mamba

First introduced in 1997, the UR-101 helped establish Urwerk’s unconventional approach to displaying time, alongside the UR-102. Nearly three decades later, the model still serves as a platform for new variants. Following the hand-painted guilloché bronze-cased T-Rex (2025) and this year’s gem-set Diamond Sky editions, the new UR-101 Green Mamba is more restrained, relying on colour contrast rather than elaborate decoration, and the colour combination explains the name.

The UR-101 Green Mamba comes in a 41mm case measuring 10.3mm thick, made from matte-finished steel with a black PVD coating. The asymmetrical case architecture retains the UR-101’s distinctive silhouette. The case and caseback share the dark treatment. An anti-glare, metallised sapphire crystal protects the display. Water resistance is 30m.

The brand’s signature wandering-hours display features two satellites mounted on a rotating carousel, each carrying the hour indications. The active satellite travels from left to right across a semicircular, 180-degree minute scale in emerald green. The satellite’s position indicates the minutes, and the number displayed on the satellite shows the current hour. Once it gets to the end of the scale, the next satellite takes over. The hours and minutes markers are treated with Super-LumiNova.

The watch is powered by the automatic UR-1.01V calibre (Vaucher base), built with 28 jewels and operating at 28,800 vibrations/hour. It provides a 48-hour power reserve. The movement combines copper, brass and ARCAP P40 components, with finishes including snailing, sandblasting and satin-brushing. Chamfered screw heads complete the detailing.

This new edition of the UR-101 is worn on a black rubber strap with a black calfskin lining, closed with a black DLC-coated steel pin buckle. Limited to 50 pieces, the Urwerk UR-101 Green Mamba is priced at CHF 33,000, excluding taxes. For more details, please visit www.urwerk.com.