In Basel, Girard-Perregaux made a new step in its quest for chronometric perfection with a high-speed tourbillon on three separate axes. The exceptional Tri-Axial Tourbillon watch is a major achievement for the Swiss manufacturer which perfectly shows its watchmaking mastery.
The tourbillon cage that performs one rotation in one minute is integrated within a structure positioned on a second axis which performs a complete rotation in thirty seconds. They are both inserted into a third system which is situated on a third axis that performs one rotation in two minutes. The total diameter of the ensemble comes to 13.78mm.
The cage and the drive systems are crafted from stainless steel, but such a complex mechanism requires the use of a mixture of materials. Thus, the steel cage comes with the support pillars in titanium or in rose gold to operate as a counterweight where the kinetic balance requires. The total weight is just 1.24 grams. The balance which comprises 16 rose gold adjustment micro-screws oscillates at the frequency of 21,600 vibrations per hour (3 Hz).
The impeccable caliber stays faithful to the purest of traditions
Girard-Perregaux Tri-Axial Tourbillon is powered with the new GP09300 mechanical movement with manual winding which displays hours, minutes and a time reserve indication. The amazing mechanism features a generous mix of polished surfaces, brushed surfaces, hand-chamfering, circular graining and mirror polishing, thus giving the timepiece a note of visual depth from every angle. The caliber GP09300 measures 36.10mm in diameter and 16.83mm in thickness and it consists of 317 individual parts. It is constructed to provide at least 52 hours of power reserve when fully wound.
Furthermore, the sapphire crystal case back of the watch shows the entire mechanism and, in particular, the satiny circular bridge engraved with the words “Tri-Axial” that supports the differential of the tourbillon system. A plaque in the arrow-shape of the Tourbillon with famous Three Bridges features the individual number of each piece. This shape is also found on the gold bridges which are visible on the back of the mechanism as well.
A complex multi-level dial is light gray with darker gray areas surrounding each of the indications. Besides the tourbillon which is the star of the show, the dial also features a power reserve indicator which is placed at the 6 o’clock position. A silver dial which is situated between 1 and 2 o’clock position displays time. Hours and minutes are indicated by dauphine-shaped skeletonized hands made of rose gold. Rose gold Arabic numerals are set at the quarter hour.
Girard-Perregaux Tri-Axial Tourbillon (ref. 99815-52-251-BA6A) is housed in a large rose gold case which measures 48mm in diameter. The colossal case incorporates a large beveled bezel which is in line with the design codes of the brand’s Haute Horlogerie collection. There is one detail left. A toric-shaped sapphire crystal is integrated into the side of the case at the 9 o’clock position in order to show the rotation of the tourbillon from another angle, which is really amazing.
The new Tri-Axial Tourbillon is produced in ultra limed series of only 10 pieces and is priced at $501,900.