The Titanium Field Guide

Tandorio TD246 40mm Titanium Sub Diver

The Tandorio TD246 40mm Titanium Sub Diver is a 40 mm titanium dive watch with a Seiko NH35A or PT5000 automatic movement.

All Tandorio watchesDiver watchesMicrobrandLightweightLightest, rankedOn a titanium bracelet
Material
Titanium
Grade / type
Titanium (grade undisclosed)
Weight
85 g (with strap)
Water resistance
200 m
Type
Diver
Price
– · Not recorded: the store's struck-through reference figure on this listing varies by variant and on some variants is lower than the charged figure, so neither is credible as a list price
Case diameter
40.0 mm
Thickness
13.5 mm
Lug-to-lug
48.5 mm
Origin
China
Movement
Automatic (buyer picks NH35A or PT5000)
Caliber
Seiko NH35A / PT5000
Complications
Date
Colour
Grey
Surface treatment
None
Finish technology
Natural finish
Nickel-free
Unconfirmed (contact-point materials not all confirmed)
Bracelet / strap
20 mm leather strap with pin buckle; the page says a solid titanium bracelet is available
Matching bracelet
Standard
Crystal
Sapphire
Display back
No
Dial
Black, with date at 3; offered with several bezel insert colours
Dial colours
Black
Lume
Luminous dial and hands
Availability
Offered
Status
Current
Not published
Reference, Power reserve, Hardness, Construction, Caseback
Medium confidence Verified Oct 2026 Source: Tandorio (maker store product page)
Facts are free to cite with a link.
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Frequently asked questions

What grade of titanium is the Tandorio TD246 40mm Titanium Sub Diver?

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 Tandorio TD246 40mm Titanium Sub Diver?

The case is 40 mm across, 13.5 mm thick and 48.5 mm from lug to lug. It is water resistant to 200 m.

How much does the Tandorio TD246 40mm Titanium Sub Diver weigh?

About 85 g on its strap.

How much does the Tandorio TD246 40mm Titanium Sub Diver cost, and is it available?

It is in production, but the maker does not publish a price.

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