Large date and day
The Calibre Royal was entirely designed, prototyped, tested and assembled in Pequignet’s Haute Horlogerie laboratories in Morteau, France. Its creation required 279 technical drawings, 318 components, of which 316 were created to plan by the Pequignet laboratory, 150 tools and component manufacturing matrices, and more than 20,000 dimensions… Benefiting from 8 international patents, the Pequignet Manufacture Calibre Royal is a true masterpiece of innovation!
A single large barrel provides a 100-hour power reserve design, ensuring a guaranteed run time of 88 hours, with an exceptional 72-hour display isochronism.
In an exceptional feature, the spring is wound by the barrel drum, while the initial force is distributed by a central barrel axis inserted between 2 jewels and not joined to the barrel.
This original distribution system provides perfect linearity and regularity of the movement driving force.
The overall isochronism is exceptional, with the amplitude set to 220° in vertical position after 72 hours’ operation of the power reserve.
Dual direction winding
Original system based on the principle of reversers, a reduced number of parts and improved general efficiency through reduction of normally encountered friction.
In-house designed bearing with large balls.
The power reserve system also contributes to the reliability objective, through a reduced number of parts and through the absence of a friction spring system or other random system. This unique system offers simplification and reliability.
88-hour power reserve.
A large 4-arm diamond-polished balance, with high inertia, ensures accuracy and regularity. This large balance also provides resistance to impacts, interference, and single or simultaneous activation of one or more complications. Central protection via Incabloc damper system.
The laboratory opted for a highly specialised frequency of 21,600 vibrations/hour (3 Hz) to ensure regulating part reliability and service life. These technical reliability characteristics make for longer intervals between After-Sales overhauls and servicing.
Adjustment via compensating screws with in-house stud holder, including a lock strip providing impact resistance.
Balance crossover bridge providing positioning stability and impact resistance.
Large date and day
Double large date and day window, with no amplitude loss upon activation. This all-new system, unique worldwide, ensures accuracy, reliability and easy correction operations.
3-disc date and day with instantaneous jump at midnight, correction via the crown with no corrector, irrespective of the position of the hands.
No prohibited zone: the date and day can be set at any time without risk of damaging the mechanism.
Crown winding system
A unique system, by means of the winding stem alone, ensures remarkable reliability and accuracy of the winding & time setting functions and other corrections.
Unique manual winding system declutching when the oscillating weight is in motion.
Despite the presence of an automatic winding system, the Breguet teeth ensure that the winding stem may be turned backwards by hand with ease.