Horological Atlas
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Venezianico· DiverRef. 3921510

Nereide Ultrablack

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Price
EUR600
≈ USD 699 · rate of Aug 28, 2026

The Nereide Ultrablack, reference 3921510, is a 42 mm steel dive watch from Venezianico, rated to 200 m, on the NH35A automatic and a nylon strap. Musou Black is a Japanese paint that absorbs 99.4 percent of the light that falls on it, so the hands and markers seem to float.

Movement
NH35A automatic
Case
42 mm316L stainless steel
Reserve
41h
Water
200 m
Owners’ stories

No owner has told this watch’s story yet.

Own a Nereide Ultrablack? Three short answers help the next person decide. Your words appear on this page, credited to you, once they’ve been read.

  1. 1How did this watch come to you?
  2. 2What surprised you once you started wearing it?
  3. 3Who would you recommend it to, and who should skip it?

Specifications

Case
Construction
Bezel: 316L Stainless steel, 120 clicks; crystal: sapphire with anti-reflective coating
Diameter
42 mm
Material
316L stainless steel
Lug to lug
49 mm
Water resistance
200 m
Movement
Caliber
NH35A automatic
Power reserve
41h
Jewels
24
Dial & strap
Dial
Black (Musou Black paint)
Strap / bracelet
Nylon strap
Catalogue
Tier
Accessible

Also runs on the Seiko NH35A

51 watches in the catalogue run on it, priced from EUR 450 to EUR 725 across the 32 with a published price.

  1. Venezianico
    Redentore Avventurina 40 · Ref. 1221550
    EUR 550
  2. Venezianico
    Redentore Historia Temporis · Ref. 1221520
    EUR 550
  3. Nodus
    Sector Deep Flare Destro · Ref. SEC-DEEP-FLR
    $650
  4. Nodus
    Sector Deep Sky Destro · Ref. SEC-DEEP-SKY
    $650
  5. Unimatic
    Modello Due UC2 Classic
    $655
  6. Unimatic
    Modello Quattro UC4 Classic
    $655
  7. Venezianico
    Nereide Ultrablack · Ref. 3921510THIS WATCH
    EUR 600
  8. Nodus
    Sector Deep DLC Destro · Ref. SEC-DEEP-DLC
    $700
  9. Venezianico
    Nereide 42 Black · Ref. 3321514C
    EUR 625
  10. Venezianico
    Nereide 42 Blue · Ref. 3321512C
    EUR 625
  11. Venezianico
    Nereide 42 Green · Ref. 3321511C
    EUR 625
  12. Venezianico
    Nereide 42 Light Blue · Ref. 3321515C
    EUR 625

Collector photographs

Taken by people who own this reference: their light, their wear, their patina. Not the maker’s photography. Where the maker hasn’t given us a photograph, one of these is shown as the main image above, always credited. A few are the Atlas’s own, and say so.

No collector photographs yet

If this watch is in your collection, yours would be the first. A photograph on the wrist shows what a studio image cannot: scale, wear, and how the piece has actually aged.

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How to get one

Direct from Venezianico

Venezianico publishes its current collection and its retailer or service network on its own site. Start there for what is actually in production; this catalogue records references whether or not they are still sold.

Buyer’s tip

Check the reference number against the maker's own page before buying anywhere else. It is the one detail that is hard to fake and easy to verify, and it is what the specifications on this page are keyed to.

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