Nomos Delta

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Nomos Delta (dial side)
Nomos Delta

Nomos Delta (δ) is a manual winding movement with date display and a power reserve indicator.

Based on the manual winding Nomos Alpha movement, the Delta adds an unusual and patented date display. Typically, a date wheel and associated gears are stacked below the mainplate between the rest of the watch movement and the dial. However, this makes these movements more bulky and thick. Instead, Nomos places the date ring around the movement, with the switching mechanism integrated into the movement itself, making the Delta and Beta just as thin as the Alpha, on which they are based.

The power reserve indicator is also integrated into the bottom plate of the movement, adding no additional thickness. It shows the remaining power in the mainspring, serving as a reminder to wind the watch.

Like all Nomos movements, the Beta is decorated in the Glashütte style, including a three-quarter plate, hacking seconds, Glashütte Stripes, solar grinding or Langeleist-Perlage.

This calibre is part of a family of manual winding movements:




Manual winding movement
Shock protection
Escapement: stone lever
Yoke winding system


Small seconds
Date display
Power reserve indicator


14½ lignes
D 32.15 mm, H 2.8 mm
23 jewels
21,600 A/h
Power reserve ca. 43h


Hacking seconds, date, power reserve indicator
Triovis fine regulation
Glashütte solar grinding on ratchet and crown wheel
Glashütte three-quarter plate
Glashütte ratchet

Production period: