Parmigiani Tonda Annual Calendar
Parmigiani Fleurier presents the Tonda Annual Calendar, a piece that conveys Michel Parmigiani’s passion for these complications. In his honour, the manufacturer has developed the calibre PF339, which features both a retrograde annual calendar and a precision moon phase. In combination, these two complications ensure the new Tonda Annual Calendar is a piece wholly devoted to astronomy, as it transcribes the rotation of the Earth in relation to both the sun and the moon.
Using the PF331 automatic movement as a base, Parmigiani Fleurier developed the calibre PF339, equipped with an additional module dedicated to the Retrograde Annual Calendar and its precision moon phase. The unique feature of this automatic movement, with a power reserve of 50 hours, is its series-mounted double barrel. This stabilises the distribution of energy so that it is transmitted to the regulator at a constant level. The bridges are hand-bevelled and decorated with Côtes de Genève, displaying exemplary craftsmanship down to the smallest details – even those that remain hidden.
- Annual Calendar Complication:
- The Annual Calendar complication will accurately account for odd & even months with the exception of the 29th day of February, requiring a manual adjustment once every 4 years.
- The day of the week sub-dial is located at the 9 o’clock position.
- Retrograde date indicator.
- The month sub-dial is located at the 3 o’clock position.
- Moonphase:
- Precision moon phase indicator – requiring a correction once every 122 years!
- 2 moons: for the northern & southern hemispheres.
- The phases of the moon move in & out of view via an aperture on the dial through which the moon phase disc is visible, imitating the waning & waxing of the moon phases.
- Parmigiani Caliber pf339 beats at 28,800 vph, composed out of 359 parts, contains 32 jewels & has an approximate power reserve of 50 hours.