Nomos Glashütte
Nomos Glashütte Tetra 27 401
The Nomos Glashütte Tetra 27 (reference 401) is a 27.5 mm stainless steel watch with a white dial. It runs on the manual caliber DUW 4001 with a 53-hour power reserve and is water resistant to 50 m.
Specifications
Case
- Reference
- 401
- Collection
- Tetra
- Case size
- 27.5 mm
- Thickness
- 6.1 mm
- Case material
- Stainless steel
- Case shape
- Square
- Crystal
- Sapphire
- Water resistance
- 50 m
- Bracelet / strap
- Horween Shell Cordovan leather (black, 18 mm)
Dial and bezel
- Dial
- White
Movement
- Movement
- Manual
- Caliber
- DUW 4001
- Power reserve
- 53 hours
- Jewels
- 17
Production
- Production
- Current
Dial versions
This reference was made with these dials and finishes.
401 White
White
How it compares within the Tetra family
Side by side with other references in the same collection, from the catalog.
| Reference | Size | Material | Dial | Caliber | Years |
|---|---|---|---|---|---|
| 401 (This watch) | 27.5 mm | Stainless steel | White | DUW 4001 | — |
| 406 | 29.5 mm | Stainless steel | White | DUW 4001 | — |
| 408 | 29.5 mm | Stainless steel | White | DUW 4001 | — |
| 437 | 29.5 mm | Stainless steel | Ochre | DUW 4001 | — |
| 438 | 29.5 mm | Stainless steel | Rose | DUW 4001 | — |
| 439 | 29.5 mm | Stainless steel | Sage green | DUW 4001 | — |
| 440 | 29.5 mm | Stainless steel | Dark | DUW 4001 | — |
About the Tetra family
The Tetra is Nomos's square watch, hand-wound, in steel.
The catalog lists the Tetra, the smaller Tetra 27 and colour versions such as Basalt, Ochra, Salvia and Terra. Dealers quote the model number and dial.
Quick answers
- What size is the Nomos Glashütte Tetra 27 401?
- The Nomos Glashütte Tetra 27 401 has a 27.5 mm case, 6.1 mm thick.
- What movement does the Nomos Glashütte Tetra 27 401 use?
- It uses the manual caliber DUW 4001, with a 53-hour power reserve.
- How water resistant is the Nomos Glashütte Tetra 27 401?
- It is water resistant to 50 metres.
- Is the Nomos Glashütte Tetra 27 401 still in production?
- Yes, it is a current reference.
- What is the Nomos Glashütte Tetra 27 401 made of?
- The case is stainless steel. Bracelet or strap: Horween Shell Cordovan leather (black, 18 mm).
Catalog facts checked November 2026.