The Titanium Field Guide

Zelos Avant A-4 Skeleton

Archive · used only

The Zelos Avant A-4 Skeleton was a 40 mm bronze dress watch with an automatic movement. It is no longer made, so this page is a reference for buying one used.

All Zelos watchesDress watchesUnder $1,000MicrobrandUnder 11 mm thick
Price
$699
Material
Bronze
Grade / type
CuSn8 marine bronze
Water resistance
50 m
Type
Dress
Case diameter
40.0 mm
Thickness
11 mm
Origin
Singapore
Movement
Automatic, fully skeletonised
Caliber
STP skeleton (Swiss)
Complications
Time only
Finish technology
Natural finish
Nickel-free
Unconfirmed (contact-point materials not all confirmed)
Bracelet / strap
Horween leather strap with deployant clasp
Crystal
Sapphire
Display back
No
Dial
Skeleton
Availability
No longer offered
Status
Archive (2018, sold out)
Not published
Reference, Lug-to-lug, Weight, Power reserve, Colour, Hardness, Construction, Surface treatment, Caseback, Matching bracelet, Lume
High confidence Verified Oct 2026 Source: Zelos (Avant A-4 Skeleton)
Facts are free to cite with a link.
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Frequently asked questions

What is the case of the Zelos Avant A-4 Skeleton made of?

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

What size is the Zelos Avant A-4 Skeleton?

The case is 40 mm across and 11 mm thick. It is water resistant to 50 m.

How much does the Zelos Avant A-4 Skeleton cost, and is it available?

It is no longer made, so the only way to buy one is used. Its list price when it was in production was $699.

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