The Titanium Field GuidePicks of the month

Tandorio 50 Fathoms CuSn8 Bronze Diver

TD234

The Tandorio 50 Fathoms CuSn8 Bronze Diver is a 40 mm bronze dive watch with a Seiko NH35A automatic movement. At a list price of $161, only two of the 90 other bronze dive watches in production, leaving out the fashion brands cost less.

All Tandorio watchesDiver watchesUnder $500MicrobrandDisplay back
Price
$161
Material
Bronze
Grade / type
CuSn8 marine bronze
Water resistance
200 m
Reference
TD234
Type
Diver
Case diameter
40.0 mm
Thickness
14 mm
Lug-to-lug
50.5 mm
Origin
China
Movement
Automatic
Caliber
Seiko NH35A (PT5000 option)
Complications
Time only
Construction
Assembled
Finish technology
Natural finish
Caseback
Sapphire
Nickel-free
Unconfirmed (bracelet, strap, or clasp hardware not confirmed)
Bracelet / strap
Strap; glass display caseback
Crystal
Domed sapphire
Display back
Yes
Dial
Black
Dial colours
Black
Lume
C3 on bezel markings
Availability
Offered
Status
Current
Not published
Weight, Power reserve, Colour, Hardness, Surface treatment, Matching bracelet
High confidence Verified Sep 2026 Source: Tandorio Spec checksAlloy Jul 2026Price Jul 2026
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Frequently asked questions

What is the case of the Tandorio 50 Fathoms CuSn8 Bronze Diver made of?

The case is cusn8 marine bronze. That is confirmed against the maker's specification. The caseback is sapphire.

What size is the Tandorio 50 Fathoms CuSn8 Bronze Diver?

The case is 40 mm across, 14 mm thick and 50.5 mm from lug to lug. It is water resistant to 200 m.

How much does the Tandorio 50 Fathoms CuSn8 Bronze Diver cost, and is it available?

It is in production, at a list price of $161.

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