A paragon of fine Swiss watchmaking, Logical One is Romain Gauthier’s Grand Prix de Genève-winning creation that contains a revolutionary snail cam and friction-minimising ruby-link chain, plus sapphire-lined mainspring barrel, to offer nearly two days of constant force.
Its beautifully hand-decorated, in-house movement can be admired dial side and through the display back, and is wound using an ergonomic winding pusher integrated into the case band. It features hours and minutes on an off-centre subdial, small seconds, and a 46-hour power reserve indicator on the back. This year, Romain Gauthier presents a titanium edition of this micro-mechanical marvel.
Part of Logical One Natural Titanium’s splendour lies in the contrasts created by the various finishes applied to the case and movement: light and dark, polished and satin-finished. The mainplate, mainspring barrel bridge and lower bridge for the constant force mechanism bear a deep anthracite ADLC finish. Yet, the balance bridge, escape wheel bridge and power reserve indicator bridge are in a bright palladium-treated brass that brings out the fine hand-finishing of these parts. Likewise, the upper ‘bar’ bridge for the constant force system is in light-hued natural titanium.
As for the titanium case, the lugs, bezel, caseback, pusher and time-setting crown are satin-finished, creating a gentle sheen that forms a fine counterpoint to the gleaming caseband, which has been highly polished. The alligator leather strap is in casual matte black with light grey stitching.
Logical One Natural Titanium is available with oven-fired white enamel dial with flame-blued steel hands, oven-fired black enamel dial with 18k gold hands, or black clous de Paris dial with 18k gold hands.
Grade 5 natural titanium case with anthracite ADLC and palladium-treated movement
Features and indications
Features: Hours, minutes, small seconds, 46-hour power reserve, push-button winding and innovative chain-and-fusee style constant force system featuring snail cam and ruby-link chain
Dial and hands
Oven-fired white enamel dial on a 18k gold base complemented by flame-blued steel hands, or
Oven-fired black enamel dial on a 18k gold base complemented by 18k gold hands, or
Blackened brass dial featuring clous de Paris guilloche complemented by 18k gold hands
Dimensions: 35.5mm x 10.5mm
Power reserve: 46 hours
Number of jewels: 63 in total, including 26 for the constant-force chain
Number of components: 359
Balance frequency: 28,800 vph / 4Hz
Movement components in: Steel, stainless steel, beryllium copper, brass, titanium and German silver
Finishing: Highest level haute horlogerie finishing
Dimensions: 43mm x 15mm
Water resistance: 30m/3atm/100ft
Sapphire crystal with anti-reflection coating front and display back
Crown for time-settingat 2 o’clock
Push button for winding at 9 o’clock
Matte black alligator leather strap with light grey stitching, hand-stitched in Switzerland with titanium pin buckle