The Brainstorm Chapter Two is the second timepiece in the Bovet collection to be fitted with a sapphire crystal case in the emblematic writing case with an asymmetrical profile presented in 2016. The caliber for this Brainstorm Chapter Two is entirely manufactured in the Bovet 1822 workshops and is the result of a new design. Absolute control of energy guarantees an autonomy greater than five days of power reserve by the use of a single barrel, which maintains the oscillations of the regulating structure at a frequency which has been increased to the frequency of 21,600 v/h for chronometry enhanced by the patented double-sided flying tourbillon.
The information provided by this new caliber is displayed consistently in the volume of the case. A dome dial displays the hours and minutes of local time in the upper part of the case. The seconds are read by an index fixed on the tourbillon, itself, placed at 6 o’clock which makes a complete revolution, in 60 seconds. Finally, two rotating domes placed, respectively, at 3 o’clock and 9 o’clock harmoniously complete the shaping. The dome, located at 3 o’clock, displays a second time zone subject to a patent. The names of 24 cities representing the 24 time zones are printed on the rotating part of the dome which makes a complete revolution, by scanning the 24-hour graduation of the base ring. This new display also offers the world time function, which allows the time in each of the 24 time zones to be read simultaneously.
In perfect symmetry, the moon phase indicator is positioned at 9 o’clock and is also displayed by a rotating dome. The surface of the lunar ground is engraved by hand before luminescent material is applied, also, by hand. The two circular windows which overhang the dome make it possible to read the age of the moon according to the specific orientation of its crescent, whether one is in the northern hemisphere or the southern hemisphere of the earth. The precision mechanism that drives this dome gives it an accuracy that requires a correction of one day every 127 years. The five days of autonomy are displayed by an indicator positioned in the middle of the case between the two strap lugs. A position that gives full meaning to the use of the sapphire crystal case.
A total of only 60 movements will be produced for the Brainstorm Chapter Two. They will be distributed among the 47.8mm-diameter sapphire case, limited to 30 timepieces, with a choice of blue quartz, green quartz, or blue aventurine glass dial, by respective limited editions of 10 timepieces. No more than 10 of any single style made from these 60 movements will be crafted.