
Tetra 27 Duo Doré
- Manufacture CalibreDUW 4001 Duo
- DialWhite
- StrapStrap
A study in proportion and restraint.
The NOMOS Glashütte Tetra 27 Duo Doré Ref. 405 brings a refined simplicity to the distinctive square Tetra form, with compact 27 mm proportions and subtle gold accents. Its two-hand display removes everything non-essential, allowing the geometric case and clean dial to take centre stage, while the hand-wound DUW 4001 Duo calibre delivers precise Glashütte craftsmanship.
We carry it for collectors who appreciate considered design — where distinctive geometry, mechanical simplicity and independent watchmaking come together.

A refined calibre built for essential timekeeping.
The DUW 4001 Duo is an in-house, manually wound manufacture movement that pares timekeeping back to its essentials while retaining the hallmarks of Glashütte watchmaking. Its three-quarter plate, Glashütte stopwork, tempered blue screws and fine ribbing and perlage are complemented by the NOMOS Swing System and DUW regulation system. Regulated in six positions with a 53-hour power reserve, it combines mechanical simplicity with meticulous finishing.
The watch, by the number.
The case
- Diameter
- 27.5 mm × 27.5 mm
- Thickness
- 6.1 mm
- Lugs
- 38.5 mm
- Material
- Stainless Steel
- Finishing
- Stainless steel back
- Glass
- Sapphire crystal glass
The Dial & Functions
- Colour
- White
- Material
- Stainless Steel
- Finish
- Galvanized, white silver-plated
- Pattern
- Plain / smooth
- Indices
- Printed Arabic numerals and fine minute track
- Hands
- In gold
- Seconds
- NA
- Functions
- Hours, minutes, manual winding, stop-seconds
Bracelet & Water Resistance
- Strap
- Vegan velour remborde beige lug width 18 mm
- Clasp
- Stainless-steel pin buckle
- Crown
- Stainless-steel crown, push/pull
- Water Resistance
- 5 ATM (splash-proof)
Hold it once. Turn it over.
A watch makes more sense in the hand than on a screen — particularly through the sapphire back. Book a viewing at 900 West Hastings St., Vancouver and we will put a loupe in your hand.
Begin a viewing →

