The Bronze Field Guide

Tandorio TD232K Solid Bronze Sub Diver

The Tandorio TD232K Solid Bronze Sub Diver is a current-production diver watch with a cusn8 bronze case. It measures 40.0 mm across, 13.5 mm thick, and is water resistant to 200 m. Inside is the Seiko NH35 / PT5000 automatic (buyer picks nh35 or pt5000) movement, with 41 hours (NH35) power reserve. Complications: Time only. Priced from $162 (approx, varies by movement and dial). Brand origin: China.

Bronze diver watchesCuSn8Skin-safe backDiversUnder $500
Reference
–
Type
Diver
Price
$162 · approx, varies by movement and dial
Case diameter
40.0 mm
Thickness
13.5 mm
Lug-to-lug
–
Water resistance
200 m
Weight
–
Origin
China
Movement
Automatic (buyer picks NH35 or PT5000)
Caliber
Seiko NH35 / PT5000
Power reserve
41 hours (NH35)
Complications
Time only
Ceramic
CuSn8 marine bronze
Colour
–
Hardness
–
Construction
Assembled
Surface treatment
–
Caseback
Steel (solid) or display back option
Nickel-free
Not verified (contact-point materials not all confirmed)
Bracelet / strap
Leather or rubber strap with bronze buckle
Ceramic bracelet
–
Crystal
Domed sapphire
Display back
–
Dial
Black, also blue and green variants
Lume
C3 Super-LumiNova
Availability
Offered
Status
Current
Medium confidence Verified Jul 2026 Source: Tandorio 40mm CuSn8 bronze SUB case (official) / Tandorio bronze collection (official) Maker / listing ↗
Facts are free to cite with a link.
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Frequently asked questions

What bronze alloy is the Tandorio TD232K Solid Bronze Sub Diver?

The Tandorio TD232K Solid Bronze Sub 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 TD232K Solid Bronze Sub Diver?

It is 40.0 mm in diameter, 13.5 mm thick, and water resistant to 200 m.

How much does the Tandorio TD232K Solid Bronze Sub Diver cost, and is it available?

It is current-production and lists from $162.

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