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Romain Gauthier

Romain Gauthier Logical One Logical One

The Romain Gauthier Logical One (reference Logical One) is a 43 mm platinum / Red Gold watch with a black dial. It is water resistant to 30 m.

Specifications

Case

Reference
Logical One
Collection
Logical One
Case size
43 mm
Thickness
14.2 mm
Case material
Platinum / Red Gold
Case shape
Round
Crystal
Sapphire (front and back)
Water resistance
30 m
Bracelet / strap
Alligator, pin buckle

Dial and bezel

Dial
Black

Movement

Movement
Manual
Frequency
28,800 vph
Functions
Constant force (chain and fusee), Small seconds

Dial versions

This reference was made with these dials and finishes.

  • Logical One Black

    Blackened brass, Clous de Paris guilloche (platinum edition)

About the Logical One family

The Logical One uses a chain and a snail-shaped cam to deliver constant force to the escapement, a modern version of the fusée.

The catalog lists it in platinum and red gold. Dealers check the papers and full function.

Quick answers

What size is the Romain Gauthier Logical One Logical One?
The Romain Gauthier Logical One Logical One has a 43 mm case, 14.2 mm thick.
How water resistant is the Romain Gauthier Logical One Logical One?
It is water resistant to 30 metres.
What is the Romain Gauthier Logical One Logical One made of?
The case is platinum / Red Gold. Bracelet or strap: Alligator, pin buckle.

Catalog facts checked November 2026.