The Bronze Field Guide

Tandorio TD239M CuSn8 Bronze Willard Captain Diver

The Tandorio TD239M CuSn8 Bronze Willard Captain Diver is a current-production diver watch with a cusn8 bronze case. It is priced well under the $599 median for the category.

All Tandorio watchesBronze diver watchesCuSn8Skin-safe backDiversUnder $500
Price
$164
Alloy
CuSn8 marine bronze
Water resistance
200 m
Caseback
Steel
Type
Diver
Case diameter
44.0 mm
Thickness
14 mm
Origin
China
Movement
Automatic
Caliber
Seiko NH35A
Power reserve
41 hours
Complications
Date
Construction
Assembled
Nickel-free
Not verified (contact-point materials not all confirmed)
Bracelet / strap
Brown leather strap
Crystal
Sapphire
Display back
No
Dial
Black or white with date at 3
Dial colours
Black White
Lume
Super-LumiNova
Availability
Offered
Status
Current
Not published
Reference, Lug-to-lug, Weight, Colour, Hardness, Surface treatment, Bronze bracelet
Medium confidence Verified Jul 2026 Source: Tandorio official store
Facts are free to cite with a link.
See it in the interactive guide

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Frequently asked questions

What bronze alloy is the Tandorio TD239M CuSn8 Bronze Willard Captain Diver?

The Tandorio TD239M CuSn8 Bronze Willard Captain Diver has a cusn8 bronze case, though its caseback is steel. It is recorded at medium confidence pending a maker-stated alloy.

What size is the Tandorio TD239M CuSn8 Bronze Willard Captain Diver?

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

How much does the Tandorio TD239M CuSn8 Bronze Willard Captain Diver cost, and is it available?

It is current-production and lists from $164.

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