Nomos Glashütte Ahoi Ahoi Datum

Reference 551

About this watch

The Nomos Glashütte Ahoi Datum is a masterpiece that embodies the perfect blend of elegance, functionality, and social consciousness. This automatic watch features an in-house movement, water resistance up to 200 meters, and a sleek design that exudes modern yet timeless charm. The white dial with mixed indexes and stick hands is a feast for the eyes, while the open case back showcases the intricate workings of the Zeta caliber. With its comfortable fit and lightweight design, this watch is perfect for daily wear as well as special occasions. Its unique blend of style, functionality, and ethical commitment to supporting Doctors without Borders makes it a statement piece that goes beyond mere aesthetics.
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Key Features

  • In-house movement Nomos Glashütte caliber Zeta
  • Water resistance up to 200 meters
  • Sapphire glass for scratch-resistance
  • Open case back showcasing the movement
  • Automatic winding with 43-hour power reserve
  • 26 jewels for exceptional accuracy and performance
  • Patented date mechanism with date ring around the movement

Specifications

Brand
Nomos Glashütte
Family
Ahoi
Model
Ahoi Datum
Reference
551
Movement
zeta
Movement Features
  • Hours, Minutes, Small Seconds
  • Date
Case
Stainless Steel 40mm
Dial Color
White
Crystal
Sapphire
Water Resistance
200

Current Listings

[WTS] NOMOS Glashutte Ahoi Neomatik 38 date (Reference 525) white dial

NOMOS Glashutte Ahoi Neomatik 38 date (Reference 525) white dial

NOMOS Glashutte - 525 · $3,899
The NOMOS Glashutte Ahoi Neomatik 38 date is a high-end watch featuring a white dial and sapphire open case back. It includes two straps, one black/blue textile strap and a NOMOS brown shell cordovan strap.

  • Condition: Excellent, minor scratch on lug from strap change
  • Warranty: Prestige Time warranty
  • Water resistance: 20 atm (suitable for diving)
  • Dimensions: [object Object]
Posted at
Apr 22, 2026, 6:27 AM
Active
[WTS] Nomos Ahoi 516 Sky $2425

Nomos Ahoi 516 Sky $2425

Nomos - Ahoi 516 Sky · $2,425
The Nomos Ahoi 516 Sky is a dive watch featuring a sky blue dial, white superluminova hour indexes, and an orange seconds hand. It has a diameter of 38.5 mm and a height of 9.8 mm.

  • Condition: Used with minor scratches/hairlines (see pictures)
  • Case diameter: 38.5 mm
  • Height: 9.8 mm
  • Lug-to-lug distance: 48.7 mm
Posted at
Apr 19, 2026, 6:50 PM
Active
[WTS] Nomos Ahoi Atlantik ref. 561 - EU

Nomos Ahoi Atlantik ref. 561 - EU

Nomos - 561 · $2,000
A Nomos Ahoi Atlantik watch in the short version, presented in a full kit with box and papers. It's a beautiful piece that oozes warmth, much nicer than the current production model.

  • Condition: Very good condition, minor micro swirls on polished surfaces
  • Case size: 36mm diameter
  • Strap options: Original nylon strap, 18mm cordovan leather band included as free gift
Posted at
Apr 15, 2026, 10:31 AM
Active
[WTS] NOMOS Ahoi 550 – $1,999

NOMOS Ahoi 550 – $1,999

NOMOS - Ahoi 550 · $1,999
The NOMOS Ahoi 550 features a 40.3mm case size, automatic movement, and a water resistance of 20 Bar.

  • Condition: Excellent
  • Case Size: 40.3mm
  • Lug To Lug: 51mm
  • Thickness: 10.6mm
Posted at
Apr 10, 2026, 1:51 PM
Active