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Calibre analysis / Automatic winding

NOMOS DUW 6101: a date that circles the dial

On the Tangente neomatik 41 Update, two red dots mark today's date on a ring at the dial's edge. Behind it is the slim automatic DUW 6101, with bidirectional quick date adjustment.

Published 10 October 20264 min read
Tangente neomatik 41 Update
Photo: © NOMOS Glashütte · Image source

The essentials first

In one minute

CalendarPeripheral date ring; quick adjustment in both directions
MovementAutomatic DUW 6101; 3.6 mm thick
Case40.5 × 7.8 mm; 49.3 mm lug-to-lug

Why it is interesting

The DUW 6101 changes both the mechanism and a familiar task: the date becomes part of the design, and you can correct it in either direction.

Things to consider

Reference 180 offers up to 42 hours of reserve, short of two full days off the wrist. Its 49.3 mm length matters for fit, so try it on rather than judging only the 40.5 mm diameter.

NOMOS Glashütte · Tangente neomatik 41 Update

The movement in detail

The movement’s idea

A conventional date sits in a window. On the Tangente neomatik 41 Update, it runs around the dial, with two red markers framing today's number. That idea changes the familiar Tangente face: the date is visible without cutting into the centre of its spare layout.

The reason lies in the DUW 6101. NOMOS placed the date ring around the movement and integrated the calendar into its architecture. The automatic calibre measures 3.6 mm thick; the complete reference 180 watch measures 7.8 mm. This explains how the model stays slim with a large date display. A new position for the ring does not, on its own, prove exceptional accuracy.

The date ring around the edge of the Tangente neomatik 41 Update dial.Enlarge

The date ring around the edge of the Tangente neomatik 41 Update dial.

© NOMOS Glashütte · Source

Setting it is useful, too: the date can be corrected quickly both forward and backward. If the watch stopped a few days ago, correcting a one-day overshoot need not mean cycling through nearly a whole month. NOMOS still has rules for adjusting the calendar: consult the instructions for this model rather than assuming bidirectional adjustment is safe at every hour.

Practical meaning

For reference 180, the brand specifies a 40.5 mm diameter, 49.3 mm lug-to-lug length and up to 42 hours of power reserve. On the wrist, its length may be more noticeable than its modest thickness. A fully wound watch taken off on Friday evening will probably need resetting by Monday morning: 42 hours will not span the whole weekend.

The automatic DUW 6101 as seen through the transparent caseback.Enlarge

The automatic DUW 6101 as seen through the transparent caseback.

© NOMOS Glashütte · Source

The DUW 6101 also has NOMOS's proprietary swing system and automatic winding. But the point of this example is how an engineering choice becomes a legible design feature and makes date correction easier. For daily wear, compare the fit of the nearly 49.3 mm case and the ring's readability against a familiar date window.

Sources

NOMOS Glashütte — Tangente neomatik 41 Update, reference 180nomos-glashuette.comNOMOS Glashütte — DUW 6101 calibrenomos-glashuette.comNOMOS Glashütte — date-setting guidancenomos-glashuette.com