The Titanium Field Guide

Tandorio 40mm VH31 Quartz CuSn8 Bronze Pilot

CUSN8 Bronze Pilot Series (VH31)

The Tandorio 40mm VH31 Quartz CuSn8 Bronze Pilot is a 40 mm bronze pilot watch with a Seiko VH31 quartz movement. At 10 mm thick, no other bronze pilot watch with a stated thickness is thinner, out of 45.

All Tandorio watchesPilot watchesUnder $500MicrobrandUnder 11 mm thick
Price
$167.61
Material
Bronze
Grade / type
CuSn8 tin bronze
Water resistance
50 m
Reference
CUSN8 Bronze Pilot Series (VH31)
Type
Pilot
Case diameter
40.0 mm
Thickness
10 mm
Lug-to-lug
48 mm
Origin
China
Movement
Quartz, sweeping seconds
Caliber
Seiko VH31
Power reserve
2-year battery
Complications
Time only
Construction
Assembled
Surface treatment
Brushed
Finish technology
Natural finish
Nickel-free
No (steel contact)
Bracelet / strap
Top-grain leather or nylon strap, stainless steel buckle
Crystal
Double-domed mineral or sapphire (buyer's choice), inner AR
Display back
No
Dial
Matte black
Dial colours
Black
Lume
Swiss Super-LumiNova C1
Availability
Offered
Status
Current
Not published
Weight, Colour, Hardness, Caseback, Matching bracelet
High confidence Verified Oct 2026 Source: Tandorio official store
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Frequently asked questions

Is the Tandorio 40mm VH31 Quartz CuSn8 Bronze Pilot nickel-free?

No. At least one part that touches the skin is steel, usually the caseback or the clasp, and steel carries nickel, so the guide does not list it as nickel-free.

What is the case of the Tandorio 40mm VH31 Quartz CuSn8 Bronze Pilot made of?

The case is cusn8 tin bronze. That is confirmed against the maker's specification.

What size is the Tandorio 40mm VH31 Quartz CuSn8 Bronze Pilot?

The case is 40 mm across, 10 mm thick and 48 mm from lug to lug. It is water resistant to 50 m.

How much does the Tandorio 40mm VH31 Quartz CuSn8 Bronze Pilot cost, and is it available?

It is in production, at a list price of $167.61.

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