-
Close

watch

  • Technical
  • Non-classified

Logical One Black Titanium

Romain Gauthier 2015

Men's

Logical One is equipped with a type of fusee-and-chain constant-force transmission. The system developed by Romain Gauthier solves two of the inherent problems of the fusee-and-chain - namely the need for small and therefore fragile links to wrap multiple times around the fusee, and the fact that the chain is often transmitting force at an angle - by replacing the fusee with a slowly rotating snail cam, positioned at 10 o'clock to the left of the hours and minutes dial. Because the snail cam and barrel are on the same level, force is always transmitted in a straight line. Also, as only a single, short length of chain is needed, the links, which are made from synthetic ruby, can be larger and stronger. The watch is wound by an innovative ergonomic pusher. Additional features include a balance that is visible through the dial, sapphire plates inside the barrel, and an indicator for the 60-hour power reserve. This Logical One is proposed in black titanium.

Function

  • Function
    Hours, Minutes, Small seconds

Complications

  • Display
    Power-reserve indicator
  • Regulating mechanism
    Constant-force escapement
    Fusee mechanism

Movement

  • Energy supply
    Manual-winding
  • N° of components
    355
  • N° of jewels
    71
  • Power reserve
    46 hours
  • Vibrations
    28800
  • Form
    Round
  • Height/thickness
    10.5 mm
  • Diameter
    33.5 mm

Case

  • Form
    Round
  • Material
    Titanium
  • Height/thickness
    14.2 mm
  • Diameter
    43 mm
  • Back
    Sapphire
  • Water-resistance
    30 m

Dial

  • Material
    Movement partially visible on the dial side
  • Colour
    Black

Strap

  • Material
    Alligator
  • Colour
    Black
  • Fastening
    Pin buckle