By giving a totally new dimension to the mechanical structure of the striking mechanism, the Minute Repeater Tourbillon with Gold Bridges watch from Girard-Perregaux underlines the Swiss Manufacture's constant determination to advance technically while respecting the aesthetic conventions and time-honored expertise that are so close to its heart.
The mechanical structure of this Minute Repeater Tourbillon with Gold Bridges offers an original opportunity to simultaneously observe on the dial side both the components of the striking-mechanism and the hammers that produce its sound by striking the wires of the gongs. In a major innovation, this positioning of the components facilitates optimum sound transmission when the watch is on the wearer's wrist.
In these enhanced conditions, the delicate components of the striking-mechanism, each given their own traditional finishing, wind up and then release the hammers so as to strike with absolute consistency first the hours (in a low tone), then the quarter-hours (in a combination of high and low tones), and finally the minutes (in a high tone).
It is the highly unusual structure of the striking-mechanism, together with the adoption of a number of subtle technical solutions for this complication that has allowed the Minute Repeater Tourbillon with Gold Bridges to perform so exceptionally well. Thus, in order to enhance the transmission of the sound wave between the heels of the two gongs, the link between the main plate and the 18K pink gold case-band has been stiffened. This is not all, however. To increase the speed of the hammers and consequently their striking impact, they are each mounted on a pair of jewels acting as ball-bearings so as to reduce friction. The design of this structure has such a harmonious visual impact that it may seem simple.
A black alligator strap with a pink gold triple folding clasp adds the finishing touch to this timepiece.
Model: Girard-Perregaux Minute Repeater Tourbillon with Gold Bridges
Limited edition of 10 pieces
Case and dial
Case in pink gold
Diameter: 45,00 mm
Crystal: anti-reflective sapphire
Case-back: sapphire crystal, secured by 6 screws
Water resistance: 30 meters (3 ATM)
Integrated side bolt in the case at 9 o’clock for activation of the minute repeater
Internal flange in pink gold with circular graining. Applied indexes in pink gold, polished
Girard-Perregaux GP09500-0002 movement
Mechanical, manual winding
Diameter: 32,00 mm (14’’’ ¼ )
Thickness: 9,35 mm
Frequency: 21.600 Vib/h - (3 Hz)
Power reserve: minimum 58 hours
Number of components: 406
Arrow-shaped Bridges and marking plates in pink gold
Functions: Tourbillon and minute repeater, hour, minute
Tourbillon carriage: 91 components for 0.49 g
Diameter: 13,60 mm
Balance wheel: variable inertia with pink gold setting screws
One rotation per minute
Gong on two tones in steel 20AP (hours and quarters on the first tone, minutes and quarters on the second tone)
Hammer inspired by the arrow-shaped Bridges of Girard-Perregaux, jewels above and under
Speed regulator with gold inertia-blocks
All the components of the movement are manufactured by hand according to the criteria of the Haute Horlogerie.
Hand-stitched black alligator strap
Triple-Folding buckle in pink gold with safety lock
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