The Wristwatch Field Guide

Tandorio 50 Fathoms CuSn8 Bronze Diver

TD234

The Tandorio 50 Fathoms CuSn8 Bronze Diver is a current-production diver watch with a cusn8 marine bronze case. It is priced well under the $1,195 median for the category. The caseback is open, so the movement is visible.

All Tandorio watchesExotic-material diver watchesBronzeDiversDisplay backUnder $5,000
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
Caseback
Sapphire
Nickel-free
Not verified (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 Jul 2026 Source: Tandorio
Facts are free to cite with a link.
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Frequently asked questions

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

The Tandorio 50 Fathoms CuSn8 Bronze Diver has a cusn8 marine bronze case with a sapphire caseback. This is confirmed against the maker spec.

What size is the Tandorio 50 Fathoms CuSn8 Bronze Diver?

It is 40.0 mm in diameter, 14 mm thick, 50.5 mm lug to lug, and water resistant to 200 m.

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

It is current-production and lists from $161.

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