Unimatic Modello Quattro Bronze (x Massena LAB)

The Unimatic Modello Quattro Bronze (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 41 other bronze field watches in the guide goes deeper. It is no longer made, so this page is a reference for buying one used.

1 official photo · reader photos welcome

Price

$895

Material

Bronze

Grade / type

CuSn8 marine bronze

Water resistance

300 m

Reference

U4S-BRZ-ML

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

Strap

Crystal

Flat sapphire with inner AR coating

Display back

No

Dial

Foliage green

Dial colours

Green

Lume

Super-LumiNova GL old radium

Availability

No longer offered

Status

Limited edition of 400, sold out

Not published

Thickness, Lug-to-lug, Weight, Colour, Hardness, Surface treatment, Matching bracelet

High confidence Verified Jul 2026 Source: Unimatic / Monochrome Maker ↗

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