The Wristwatch Field Guide

Tandorio CuSn8 Solid Bronze Turtle

TD239

The Tandorio CuSn8 Solid Bronze Turtle is a current-production diver watch with a cusn8 marine bronze case. It measures 44.0 mm across, 14 mm thick, and is water resistant to 200 m. Inside is the PT5000 (or Seiko NH35A) automatic movement. Complications: Date. Priced from $162 (approx). Brand origin: China.

Titanium, ceramic, and bronze diver watchesBronzeDiversUnder $5,000
Reference
TD239
Type
Diver
Price
$162 · approx
Case diameter
44.0 mm
Thickness
14 mm
Lug-to-lug
–
Water resistance
200 m
Weight
–
Origin
China
Movement
Automatic
Caliber
PT5000 (or Seiko NH35A)
Power reserve
–
Complications
Date
Material
Bronze
Grade / type
CuSn8 marine bronze
Colour
–
Hardness
–
Construction
Assembled
Surface treatment
–
Caseback
–
Nickel-free
Not verified (contact-point materials not all confirmed)
Bracelet / strap
Brown leather strap
Matching bracelet
–
Crystal
Sapphire
Display back
No
Dial
Black
Lume
C3 lume hands and markers
Availability
Offered
Status
Current (between batches, sold out)
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 CuSn8 Solid Bronze Turtle?

The Tandorio CuSn8 Solid Bronze Turtle has a cusn8 marine bronze case. This is confirmed against the maker spec.

What size is the Tandorio CuSn8 Solid Bronze Turtle?

It is 44.0 mm in diameter, 14 mm thick, and water resistant to 200 m.

How much does the Tandorio CuSn8 Solid Bronze Turtle cost, and is it available?

It is current-production and lists from $162.

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