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 measures 40.0 mm across, 14 mm thick, 50.5 mm lug to lug, and is water resistant to 200 m. Inside is the Seiko NH35A (PT5000 option) automatic movement. Complications: Time only. Priced from $161 (approx). Brand origin: China.

Titanium, ceramic, and bronze diver watchesBronzeDiversDisplay backUnder $5,000
Reference
TD234
Type
Diver
Price
$161 · approx
Case diameter
40.0 mm
Thickness
14 mm
Lug-to-lug
50.5 mm
Water resistance
200 m
Weight
–
Origin
China
Movement
Automatic
Caliber
Seiko NH35A (PT5000 option)
Power reserve
–
Complications
Time only
Material
Bronze
Grade / type
CuSn8 marine bronze
Colour
–
Hardness
–
Construction
Assembled
Surface treatment
–
Caseback
Sapphire
Nickel-free
Not verified (bracelet, strap, or clasp hardware not confirmed)
Bracelet / strap
Strap; glass display caseback
Matching bracelet
–
Crystal
Domed sapphire
Display back
Yes
Dial
Multiple (dial A to G, sterile and lumed)
Lume
C3 on bezel markings
Availability
Offered
Status
Current
High confidence Verified Jul 2026 Source: Tandorio Maker / listing ↗
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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