URWERK – UR-230 “Black Star” Ceramic Composite Edition

URWERK – UR-SATELLIT UR-230 “Black Star” Ceramic Composite Edition - 2025

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 The UR-230 “Black Star” plunges URWERK back into Black

URWERK ends the year in sidereal black. The independent watchmaking house unveils its new UR-230 “Black Star,” a creation that does not seek light but instead absorbs it, engulfs it – the better to restore it on its own terms.

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After the raw texture of the Carbon CTP in the “Eagle” and the mineral whiteness of the ceramic “Polaris”, the “Black Star” concludes the 230 collection triptych on a cosmic note. The curtain falls on a note of vibrant black: a gravitational field where light vanishes, only to be reborn in random flashes.

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Welcome to the dark side of the URWERK force!

 A HIGHLY PROTECTED MECHANISM

This UR-230 “Black Star” is original in more ways than one. First, there is its structure. Calibre UR-7.30 powering this creation is protected by a hermetic titanium container designed as a mechanical safe. 

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Surrounding this highly protected heart, a composite ceramic case and a black DLC titanium back form the UR-230's shell: “I love the aesthetics of ceramic and its clean, precise look. It's a material that's hard, shiny, beautiful... and incredibly fragile. A single impact and it cracks – yet I didn't want to give up on this option”, explains Felix Baumgartner, master watchmaker and co-founder of URWERK. “We had to find a solution to fulfil this desire without making any comprises.”

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The original, high-performance case of the UR-230 “Black Star” is made from a laminated composite ceramic developed specifically for URWERK: layers of braided ceramic, fibreglass and carbon fibre have been integrated into a polymer matrix. 

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When machined, this unique ceramic reveals a shiny relief. Its flat, smooth surface is illuminated with sparkling dots, creating a dense, vibrant black-light texture.

VIBRANT DARKNESS

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“While Polaris evoked the brightness of the North Star, Black Star belongs to the interstellar void”, says URWERK’s artistic director and co-founder Martin Frei. "This black is not there to conceal. It breathes. It makes light appear in a setting of shadows. In astrophysics, a Black Star refers to the state of a collapsing star. The star then absorbs light like a black hole, but not completely, just at the cosmic boundary between being and disappearing. URWERK's ‘Black Star’ embodies this paradoxical presence: a deep, living black that does not deny light but reveals it by draping it in shadows – a glow born from the very heart of the night."

 WANDERING MECHANICS

The UR-230 “Black Star” embodies URWERK’s DNA. This new UR-230 features a satellite complication with wandering hours and a retrograde 3D hand; while a central hub connects three cubic hours satellites. These four-sided blocks move across a 120° sector in 60 minutes. 

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The active hour – the one scrolling along this minutes rail – is taken charge of and put into orbit by an openworked retrograde hand that accompanies it throughout its journey from index 0 to 60. At the end of 60 minutes, the hand instantly flies back to zero to take charge of the next satellite.

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DUAL TURBINE SYSTEM

The UR-230 is a self-winding watch regulated by an exclusive dual turbine system:

• - one absorbs external shocks
• - the other regulates the air flow of the automatic winding mechanism, acting as a true aerodynamic brake.
• A control on the back allows the rotor load to be adjusted or even completely deactivated to switch to manual-winding mode.
• Two symmetrical indicators − at 11 o'clock and 1 o'clock − display these settings.

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This UR-230 “Black Star” concludes the 230 collection chapter. The end of a story, but with new adventures to follow in 2026...

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TECHNICAL SPECIFICATIONS

Collection: UR-SPECIAL PROJECTS

Model: UR-SATELLIT UR-230 “Black Star” Edition

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MOVEMENT
Caliber: UR-7.30 with automatic winding system governed by a double turbine 
Jewels: 50
Escapement: Swiss lever
Frequency: 28,800 vph - 4Hz
Balance Variable inertia
Balance: spring Flat
Energy: Double barre
Power reserve: 48 hours
Materials: Baseplate in ARCAP P40; 3D minutes pointer in aluminium with counterweight; Steel central spring; hours transporter in aluminium; central carrousel and screws in grade 5 titanium
Finitions: 
Hour-markers painted with Super-LumiNova®.
Structure finely 3D-engraved with a circular satin-brushed pattern.
Shotpeened satin-brushed subdial indications.
Finely sandblasted carrousel with a shotpeened,
circular satin-finished and black rhodium-plated cage.
Finely sandblasted satellite cam with DLC coating.
Finely sandblasted anodised 3D hand.
Components hand-painted with Super-LumiNovaTM: yellow glowing
blue for the hour-markers; yellow glowing blue for the automatic
indication; red glowing green for the 60-minute marker and the OFF
position of the automatic indicator; green for the ON indication.
Polished screws
INDICATIONS
Satellite hours; minutes.
Indications
Wandering hours on a satellite complication (URWERK patent)
3D retrograde minutes hand
Aerodynamic winding regulation indication (Air Brake)
Automatic winding status indication (On-Off)
CASE
Material: Exclusive ceramic composite, developed with and for URWERK
Dimensions: Width: 44,81 mm; Length:  53,55 mm; Thickness: 14,30 mm
Crystal: Transparent sapphire crystal
Case Back: Black DLC-treated titanium with sapphire crystal
Water resistance: Tested to 30 meters (3 ATM)
STRAP
Vulcanised yellow rubber ©, "KISKA" reference with Velcro closure

🔰Edition ✅Only ❱❱❱ 35 Pieces 
🔴PRICE:   CHF 150, 000.00 (Swiss francs / tax not included)💰

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Press Release - 2025
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Media contact:
Ms Yacine Sar
Telephone: +41 22 900 2027
Mobile : +41 79 834 46 65 

press@urwerk.com 

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