The NOMOS Ahoi neomatik Atlantic reference 561 is identified as a compact 36.3 mm automatic watch with an Atlantic-blue dial and blue fabric strap. Retailer-published dimensions put it at 9.3 mm thick and 45.5 mm lug-to-lug, but an official specification sheet for the exact 561 was not located. That distinction matters: the Ahoi family includes variants with different movements and dimensions, so specifications for another reference should not be assumed to apply here.
What is the NOMOS Ahoi Atlantic 561?
Reference 561 is also described in product listings as the “Ahoi Atlantik 561.” The 1916 Company’s 2023 description identifies it as the Ahoi Neomatik Atlantic, with a 36.3 mm stainless-steel case, Atlantic-blue dial and blue fabric strap. These details establish the model’s broad identity, but the source is a retailer description rather than a current NOMOS product sheet. The 1916 Company
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The reference number is essential when researching or shopping for this watch. NOMOS has several Ahoi Atlantic models, including larger watches and date versions, whose dimensions and mechanical specifications differ.
How does the 561 wear?
The retailer description gives the 561 a 9.3 mm thickness and 45.5 mm lug-to-lug length, alongside its 36.3 mm diameter. Those dimensions suggest a relatively compact footprint for a sports-oriented watch, with the lug-to-lug figure offering a useful clue to how much wrist width it may occupy. Actual fit still depends on wrist shape, strap adjustment and how the lugs sit.
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Treat the thickness and lug-to-lug measurements as retailer-reported, not manufacturer-confirmed specifications. NOMOS’s official June 2022 sheet for the related reference 567 lists a 9.6 mm height and 18 mm lug width, but those figures cannot be transferred to reference 561. NOMOS reference 567 specification sheet
What are the movement and water-resistance specifications?
The exact 561’s movement, power reserve and water-resistance rating are not established by the available exact-reference documentation. Do not assume that the watch uses a particular caliber or is rated to a particular depth based on another Ahoi.
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For context only, NOMOS’s reference 567 sheet specifies an automatic DUW 3001 movement, up to 43 hours of power reserve and water resistance up to 20 atm. A separate 38.5 mm Ahoi neomatik 38 date Atlantic has a DUW 6101, up to 42 hours of reserve and a 20 atm rating; NOMOS describes that variant as having a screw-down crown and crown guard. The larger reference 552 sheet lists a DUW 5001, up to 43 hours of reserve and water resistance up to 20 atm. None of these are specifications for the 561. NOMOS Ahoi neomatik 38 date Atlantic NOMOS reference 552 specification sheet
Before relying on the 561 for swimming or other water exposure, ask NOMOS or an authorized seller for documentation tied to reference 561. A rating on a related model is not confirmation for this one.
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- Nomos Tangente Neomatik Nachtblau Automatic Unisex Watch 177
What does the 561 cost?
WatchCharts reported a UK pre-owned price estimate of £1,732 for reference 561 on August 22, 2026. This is a secondary-market estimate—not an official retail price, a verified transaction or a guaranteed value. WatchCharts notes that condition, included items and location affect valuation. WatchCharts model page
The estimate can be a starting point for comparing listings, but assess the individual watch’s condition, service history, box and papers, seller reputation, location and delivery costs. The current official price and availability for a new 561 were not established.
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What should you verify before buying?
- Exact identity: Confirm the caseback or documentation says reference 561, rather than a similarly named Ahoi Atlantic variant.
- Movement and water resistance: Request exact-reference documentation; do not substitute specifications for references 567, 552 or the 38 date model.
- Fit and strap: Check the watch’s measured dimensions and confirm the strap width and replacement compatibility for reference 561. The 18 mm lug width on the 567 sheet does not establish the 561’s lug width.
- Condition and value: Compare like-for-like examples and account for condition, service needs, included accessories and location rather than treating a market estimate as a sale price.
For alternatives, compare verified wrist-fit dimensions, movement and complication, documented water resistance, strap availability, service support and current price. The available evidence does not support ranking the 561 against specific competing watches.
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- Featuring a Black Band, Silver-tone Case, Scratch Resistant Sapphire Crystal
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
