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Home/Browse/Undone/Aquadeep Signal Automatic
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Undone Aquadeep Signal Automatic
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Undone · Aquadeep Signal Black Automatic

Undone Aquadeep Signal Automatic

Diver

$395In stock

8 matched eBay listings

Case

Diameter
43mm
Material
Titanium
Water resistance
500m

Movement

Caliber
Seiko NH35
Type
Automatic

Seiko

Seiko's third-party supply version of the 4R35, sold to external watch brands and modders worldwide. Adds hacking and hand-winding over the 7S26 it effectively replaced. The NH35 has become the default automatic movement for watch modding and microbrand watches, thanks to its low cost, reliability, and wide availability of compatible parts including dials, hands, and cases in the Seiko-compatible format.

Design language

Case shape
round
Dial style
matte
Bezel
rotating
Bracelet
rubber
Hands
baton

AI-detected from the product image

3 colorways

Alternatives

01The market

Market prices.

Retail$395

eBay listings

  • UNDONE AQUADEEP SIGNAL Automatico Titanio Silicone Bianco Grigio Orologio UomoPre-owned - Excellent · US$375↗
  • UNDONE AQUADEEP SIGNAL Automatico Titanio Silicone Bianco Grigio Orologio UomoNew without box or papers · US$420↗
  • UNDONE AQUADEEP SIGNAL Automatic Titanium Silicone White Black Men's WatchNew with box and papers · IT$464↗

Lowest displayed prices first.

Search eBay ↗

Matched listings from our latest checks; eBay may show additional results. We may earn a commission through these links at no extra cost to you.

02The connection engine

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Aera Instruments D-1 Diver

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View all alternatives

03The community take

Owners talk.

“

Owners report the Undone Aquadeep Signal Automatic delivers solid build quality and reliability, with the NH35 movement earning consistent praise within the microbrand community for its dependable performance. The 43mm case and 500m water resistance appeal to those seeking a capable dive watch at accessible pricing. However, customer service and warranty handling have emerged as a significant pain point — one owner faced a falsely claimed delivery and order cancellation refusal, while another experienced water ingress that was not honored under warranty, contrasting sharply with owners who express genuine affection for the brand and maintain collections of its watches. Overall, the Aquadeep Signal Automatic is valued by its supporters for reliable timekeeping and finishing at the price, though prospective buyers should be aware of inconsistent post-sale support.

Synthesized from 3 sources
Reddit·2↗
WatchUSeek↗
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On real wrists

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04The paper trail

In collections

Titanium😈

Collection · 49 watches

Ask the communityStart a discussion about the Aquadeep Signal Automatic: get takes from other collectors.Ask →

05The discussion

Talk about the Undone Aquadeep Signal Automatic.