The Titanium Field Guide

Trematic T-Five Beigua Maris

The Trematic T-Five Beigua Maris is a current-production diver watch with a grade 5 titanium case. It is priced close to the $1,299 median for the category.

All Trematic watchesWatch diver watchesUnder $3,000Grade 5 titanium
Price
$1,320
Material
Titanium
Grade / type
Grade 5
Water resistance
300 m
Type
Diver
Case diameter
39.0 mm
Thickness
13.8 mm
Lug-to-lug
45.5 mm
Origin
Italy
Movement
Swiss automatic, 28,800 vph (4 Hz), 24 jewels
Caliber
La Joux-Perret G101
Power reserve
68 hours
Complications
Time only
Colour
Grey
Surface treatment
None
Finish technology
Natural finish
Caseback
Titanium (solid, screw secured)
Nickel-free
Unconfirmed (bracelet, strap, or clasp hardware not confirmed)
Bracelet / strap
Two straps: FKM with waterproof tek textile on a deployant buckle, and a vintage-style FKM on a regular buckle
Crystal
Ultra-domed sapphire with three internal and three external antireflective layers
Display back
No
Dial
Grey (Shadow), blue-green (Marina), and yellow (Desert) colourways
Dial colours
Grey Blue Green Yellow
Lume
Swiss Super-LumiNova, on the dial and the bezel insert
Availability
Offered
Status
Current
Not published
Reference, Weight, Hardness, Construction, Matching bracelet
High confidence Verified Aug 2026 Source: Trematic (maker product page) / Trematic (collection)
Facts are free to cite with a link.
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Frequently asked questions

What is the case material of the Trematic T-Five Beigua Maris?

The Trematic T-Five Beigua Maris has a grade 5 titanium case with a titanium (solid, screw secured) caseback. This is confirmed against the maker spec.

What size is the Trematic T-Five Beigua Maris?

It is 39.0 mm in diameter, 13.8 mm thick, 45.5 mm lug to lug, and water resistant to 300 m.

How much does the Trematic T-Five Beigua Maris cost, and is it available?

It is current-production and lists from $1,320.

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