The Titanium Field Guide

Unimatic Modello Quattro U4S-BRZ-MLL (x Massena LAB)

Archive · used only

The Unimatic Modello Quattro U4S-BRZ-MLL (x Massena LAB) was a 40 mm bronze field watch with a Sellita SW200-1 automatic movement. Rated to 300 m, only one of the 38 other bronze field watches in the guide goes deeper. It is no longer made, so this page is a reference for buying one used.

All Unimatic watchesField watchesUnder $1,000Microbrand
Price
$995
Material
Bronze
Grade / type
Bronze
Water resistance
300 m
Type
Field
Case diameter
40.0 mm
Origin
Italy
Movement
Automatic
Caliber
Sellita SW200-1
Power reserve
38 hours
Complications
Time only
Construction
Assembled
Finish technology
Natural finish
Caseback
Titanium
Nickel-free
Unconfirmed (bracelet, strap, or clasp hardware not confirmed)
Bracelet / strap
Milk shake distressed leather strap plus a foliage green TPU two-piece strap, brushed bronze buckle signed Unimatic
Crystal
Flat sapphire with AR coating
Display back
No
Dial
Dark brown tapisserie in burnt peat with gold hands
Dial colours
Brown
Lume
Super-LumiNova GL light old radium
Availability
No longer offered
Status
Limited edition of 99, exclusive to Massena LAB, sold out
Not published
Reference, Thickness, Lug-to-lug, Weight, Colour, Hardness, Surface treatment, Matching bracelet
High confidence Verified Oct 2026 Source: Unimatic (maker) / Massena LAB (co-issuer) / Monochrome
Facts are free to cite with a link.
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Frequently asked questions

What is the case of the Unimatic Modello Quattro U4S-BRZ-MLL (x Massena LAB) made of?

The case is bronze. That is confirmed against the maker's specification. The caseback is titanium.

What size is the Unimatic Modello Quattro U4S-BRZ-MLL (x Massena LAB)?

The case is 40 mm across. It is water resistant to 300 m.

How much does the Unimatic Modello Quattro U4S-BRZ-MLL (x Massena LAB) 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 $995.

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