The multiple prizewinning design classic from Glashütte with a hand-wound caliber and patented power reserve indicator that reminds the wearer when to rewind the watch. German efficiency! Another NOMOS patent: the extra-large date. The date ring is set around the movement, while the power reserve mechanism is integrated into the mainspring barrel—so everything remains elegantly slender, despite the additional complications.
Prizes and awards
Tangente represents classic modernity. It easily collects love letters and design prizes, as well as other gold stars.


Specifications
- Ref.
- 131
- Case
-
stainless steel, tripartite
sapphire crystal glass back
- Glass
- sapphire crystal glass
- Winding
- manual
- Dimensions
-
diameter
35.0 mm
height 6.6 mm
- Water resistance
- 3 atm (splash-proof)
- Dial
- galvanized, white silver-plated
- Hands
- steel, tempered blue
- Strap
-
Horween Genuine Shell Cordovan black
lug width 18 mm
Caliber
The first caliber in which our proprietary escapement, the NOMOS swing system, is setting the pace. This hand-wound caliber crafted in Glashütte, Germany, also features an extra-large date and the NOMOS power reserve indicator. Both are patented.
- Caliber
-
DUW 4401
manual
- movement height
- 2.8 mm
- diameter
- 14 ¼ lines (32.1 mm)
- Power reserve
- up to 42 hours
- Jewels
- 23
Beautiful things

Outstanding materials
In Chicago, one of the finest leathers in the world is tanned: Horween Genuine Shell Cordovan. Smooth, thick, and almost indestructible, it suits every watch and wearer.

Beautifully presented
Our hand-wound timepieces come in the classic NOMOS watch box. It is crafted from black poplar wood—and the perfect place for your favorite watch and its warranty booklet.