Calibre DUW 4301
The 2005 introduction of the Alpha movement family was an important turning point for Nomos. Although based on the preceding Nomos 1 TSP, it was largely constructed in-house rather than being a refinished ebauche. This was followed in 2006 by the Nomos Epsilon, the first Nomos movement with automatic winding. The next great leap forward for Nomos was the 2014 introduction of the Nomos Swing System, an in-house assortment, in movement DUW 4401. Over the next few years, this technology moved to other models in the Nomos movement family.
Introduced in 2014, the Nomos DUW 4301 movement is a manually wound movement with small seconds at 6 00 and a power reserve indicator at 1 00. Like other Nomos movements, it is made in a three-quarter plate design, plated with rhodium and decorated with Glashütte ribbing and perlage. The ratchet and crown wheels are decorated with a Glashütte sunburst pattern and blued screws are used. It features Glashütte stopwork, Incabloc shock protection, and 17 jewels.
The power reserve indicator is placed inside the main plate, requiring no additional thickness, and the movement is reduced in overall size. It is 23.3 mm in diameter and just 2.8 mm thick.
Calibre DUW 4301 replaced the Nomos Gamma movement, with which it shares many components.