Nomos Xi

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Nomos Xi (dial side)
© Nomos

The Xi (ξ) is an automatic worldtimer or GMT movement from Nomos.

Introduced in 2011, the Nomos Xi movement adds a world timer function between the bottom plate of the movement and the dial. This function consists of an outer disc with city names or airport codes for each timezone and a 24 hour wheel at 3:00 for "home time". It is operated by means of a pusher located at 2:00 and adjusted with a second pusher at 8:00 set flush with the case. Each time the main pusher is depressed, the central hour hand and location wheel advances by an hour. The second pusher advances the central hour hand separately from the location wheel, allowing it to be "calibrated" for the base timezone.

Nomos Xi is used in two watches:

DUW 5201

In 2014, Nomos updated their Xi movement with their new Nomos Swing System escapement, renaming the movement DUW 5201.

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Self-winding movement, bi-directional winding rotor
Escapement: stone lever
Yoke winding system
Incabloc shock protection


Hours, minutes
Small seconds, date
Hacking seconds
World time indication


13¾ lignes
Ø 31 mm, H 5.7 mm
26 jewels
21,600 A/h
Bi-directional winding central rotor with rocker
Power reserve 42 hours


Glashütte three-quarter plate
Glashütte click
Triovis precision adjustment (regulated in six positions)
Hairspring in Nivarox 1A
Blued screws
Ratchet and double wheel with Glashütte solar grinding
Rhodinated surfaces with Glashütte stripes and NOMOS-Perlage

Production period: