The Equation of Time function is presented at 4:30 via a cam featured in relief on a wheel that performs one revolution per year. This function informs the watch’s owner about the difference between civil time and solar time, as the solar day is different in duration from day to day. It is important to mention that the two reference times coincide exactly four times a year and the accumulated difference between them can make up as much as 16 minutes in November, for example.
And finally, with help of the Minute Repeater function the watch’s wearer can hear the striking of the hours, quarter-hours and minutes. This sophisticated function was created due to the exhaustive acoustic research performed by the Girard-Perregaux watchmakers. The Minute Repeater mechanism of the novelty benefits from three peculiarities of the construction of the case:
- an optimal fit between the internal diameter of the watch-case and that of the movement, so as to come up with maximum resonance;
- a curved case-back for increasing the volume of air between the movement and the case, and improving the sound production;
- a diamond-polished bottom of the case-back for reducing acoustic interference.
The 42 mm case of the new Girard-Perregaux watch is fashioned in polished pink gold. Its face is protected by a domed anti-reflective sapphire crystal. The timepiece is 30-meter water-resistant.
The new Girard-Perregaux 1966 Minute Repeater, Annual Calendar & Equation of Time watch is presented on a brown alligator strap fitted with an ardillon buckle in pink gold.
The exceptional timepiece belongs to a limited edition of just 15 pieces.
Look through a fine selection of Girard-Perregaux watches: