Following the success of last year’s Perpetual Calendar Tourbillon Manufacture, Frederique Constant now presents two new limited editions of the timepiece. Both versions feature a classic navy blue skeletonized dial and a case in either pink gold or stainless steel.
The occasion for these new watches is the opening of the new Manufacture building in Plan-les-ouates in the Swiss canton of Geneva.

The case of the Frederique Constant Perpetual Calendar Tourbillon Manufacture consists of three parts and measures 42 mm in diameter.
The silver-coloured skeletonized dials are equipped with navy blue sub-dials and an outer ring in the same colour, giving the wearer a deep insight into the complex mechanics.
The watch’s perpetual calendar displays an annual calendar, the day of the week, the date and the month, with a minimum of corrections. The complication takes into account the number of days of each month, displays the year and does not need to be corrected even in leap years. Normally, the Perpetual Calendar would work for 400 years without a manual correction; only due to one exception of the Gregorian calendar, the complication has to be corrected on March 1, 2100.
The hour and minute functions are adjusted via the crown. At 12 o’clock the dial shows the months and leap year, at 3 o’clock the date and at 9 o’clock the days of the week. The tourbillon cage with its integrated second hand, which makes a complete turn every minute, is at 6 o’clock.

The Perpetual Calendar Tourbillon Manufacture is driven by the FC-975 calibre. The automatic manufacture movement was equipped by Frederique Constant with a silicon anchor and escape wheel for greater precision. The use of silicon eliminates the problems caused by the effects of earth gravity when the movement is in a vertical position. In addition, the material is insensitive to temperature fluctuations.
Both versions come with a transparent case back through which the perlage and Geneva stripes of the movement can be admired.

Frederique Constant supplies the Perpetual Calendar Tourbillon Manufacture with an alligator leather strap that resumes the blue colour used in the subsidiary dials and outer ring.