The Titanium Field Guide

UNDONE Aquadeep Trigalight GMT

The UNDONE Aquadeep Trigalight GMT is a 43.5 mm titanium dive watch with a Seiko NH34 automatic movement.

All UNDONE watchesDiver watchesUnder $1,000MicrobrandGMT
Price
$790
Material
Titanium
Grade / type
Titanium
Water resistance
500 m
Type
Diver
Case diameter
43.5 mm
Thickness
17.5 mm
Origin
Hong Kong
Movement
Automatic GMT
Caliber
Seiko NH34
Complications
GMT
Colour
Black
Surface treatment
Black DLC
Finish technology
DLC
Nickel-free
Unconfirmed (contact-point materials not all confirmed)
Crystal
Sapphire
Display back
No
Dial
Black multi-layer ocean-textured dial
Dial colours
Black
Lume
Trigalight tritium tubes
Availability
Offered
Status
Current (limited release, shipping early October)
Not published
Reference, Lug-to-lug, Weight, Power reserve, Hardness, Construction, Caseback, Bracelet / strap, Matching bracelet
Medium confidence Verified Oct 2026 Source: UNDONE (Aquadeep Trigalight GMT)
Facts are free to cite with a link.
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Alternatives to the UNDONE Aquadeep Trigalight GMT

Hamtun Kraken H3 GMTHamtunKraken H3 GMT$63841.0 mmDiversame category · same style · shared complications · similar price
MagretteMoana Pacific Waterman GMT Titanium$73040.0 mm14 mm thickDiversame category · same style · shared complications · similar priceBoldr Odyssey TitaniumBoldrOdyssey Titanium$79940.0 mm12.5 mm thick128 gDiversame category · same style · shared complications · similar priceSignum Cuda Titanium GMTSignumCuda Titanium GMT$49942.5 mm13.4 mm thickDiversame category · same style · shared complications · similar priceMINUS-8 Diver GMT (Titanium)MINUS-8Diver GMT (Titanium)$49840.0 mm13 mm thick120 gDiversame category · same style · shared complications · similar priceADPT Series 1 Dual-TimeADPTSeries 1 Dual-Time$49938.0 mm13.6 mm thickDiversame category · same style · shared complications · similar price

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Frequently asked questions

What grade of titanium is the UNDONE Aquadeep Trigalight GMT?

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 Trigalight GMT?

The case is 43.5 mm across and 17.5 mm thick. It is water resistant to 500 m.

How much does the UNDONE Aquadeep Trigalight GMT cost, and is it available?

It is in production, at a list price of $790.

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