UMF-Ruhla Automatik Chronograph - ETA Valjoux 7750
Caliber: ETA Valjoux 7750 Automatic Chronograph
Watchcase: Stainless steel 316L
Dial: green
Diameter: 42mm ( with crown 47mm )
Height: 16mm
Weight: 122 gramm
UMF RUHLA Automatic Chronograph 1818-4
Limited to only 50 pieces worldwide
Some watches are products. Others are statements.
The UMF Ruhla 1818-4 is a no-compromise mechanical chronograph for connoisseurs – powerful in design, technically sophisticated at its core, and strictly limited to just 50 pieces worldwide. A rarity that will not be repeated.
The Brand: UMF Ruhla – Watchmaking Tradition from Germany
UMF Ruhla represents German watchmaking heritage. The historic town of Ruhla in Thuringia looks back on more than 150 years of horological tradition and was for generations one of the most important centers of watch production in Germany. Today’s UMF Ruhla models consciously build on this legacy – technically independent, clearly designed, and created with the ambition to produce mechanical watches with true character.
Mechanical Heart: ETA Valjoux 7750
At its core beats one of the most renowned and proven chronograph movements in Swiss watchmaking – the legendary ETA Valjoux 7750. A true workhorse with decades of history.
Technical specifications of the movement:
- Automatic winding with ball-bearing rotor
- 25 jewels
- 28,800 vibrations per hour (4 Hz)
- Approx. 42–48 hours power reserve
- Cam-operated chronograph mechanism
- 30-minute and 12-hour counters
- Central chronograph seconds
- Day and date display
The 7750 is known for robustness, serviceability and precision – a movement highly respected by collectors worldwide. Through the screw-down sapphire case back, the mechanics can be admired in full detail, including the characteristic oscillating rotor.
Distinctive Design with Retro-Racing Character
The finely structured, shimmering green dial gives the 1818-4 a striking presence. Contrasting sub-dials, orange accents and a clear instrument-style layout create a bold, sporty-technical character. Super-Luminova on hands, indices and bezel markings ensures excellent legibility – day and night. The handcrafted retro-racing calf leather strap with color-matched stitching completes the dynamic appearance.
Built for Everyday Use – Made for Collectors
- 316L stainless steel case
- 42mm diameter - with screwed, easy to use crown 47mm
- 16mm height
- 122 gramm weight
- Scratch-resistant sapphire crystal
- 100 meters water resistance (10 ATM)
- Super-Luminova luminous hands and indices
- Screw-down exhibition case back
- Handcrafted retro-racing calf leather strap
- Limited edition: only 50 pieces worldwide
A Chronograph with Character
The UMF Ruhla 1818-4 combines German watchmaking heritage with Swiss chronograph technology. Mechanics you can see and feel. Design that confidently stands apart.
Only 50 pieces worldwide. Once sold out, it will not return.
Reference: 1818-4 (green) | RRP: €1,499.00


