The Titanium Field Guide

UNDONE Aquadeep Submerge Automatic

The UNDONE Aquadeep Submerge Automatic is a 43 mm titanium dive watch with a Seiko NH36 automatic movement.

All UNDONE watchesDiver watchesUnder $500Microbrand
Price
$395
Material
Titanium
Grade / type
Titanium
Water resistance
500 m
Type
Diver
Case diameter
43.0 mm
Thickness
16.5 mm
Origin
Hong Kong
Movement
Automatic
Caliber
Seiko NH36
Complications
Time only
Colour
Black
Surface treatment
Black DLC
Finish technology
DLC
Nickel-free
Unconfirmed (contact-point materials not all confirmed)
Crystal
Sapphire with AR coating
Display back
No
Dial
Black
Dial colours
Black
Availability
Offered
Status
Current (between batches)
Not published
Reference, Lug-to-lug, Weight, Power reserve, Hardness, Construction, Caseback, Bracelet / strap, Matching bracelet, Lume
Medium confidence Verified Oct 2026 Source: UNDONE (Aquadeep Submerge)
Facts are free to cite with a link.
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Frequently asked questions

What grade of titanium is the UNDONE Aquadeep Submerge Automatic?

Titanium, with no grade stated. The record is at medium confidence, so check the maker's page before relying on it.

What size is the UNDONE Aquadeep Submerge Automatic?

The case is 43 mm across and 16.5 mm thick. It is water resistant to 500 m.

How much does the UNDONE Aquadeep Submerge Automatic cost, and is it available?

It is in production, at a list price of $395.

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