Parmigiani Fleurier Tonda Annual Calendar

Parmigiani Fleurier presents the Tonda Annual Calendar with the in-house developed Calibre PF339, which features both a retrograde annual calendar and a precision moon phase.

On the annual calendar part, along with retrograde date indication, the watch features sub-dials at 3ó clock and 9ó clock respectively for month and day display. The date is automatically adjusted based on the number of days in the month but it works on the basis of 29 days for February, whether or not it is a leap year. Therefore, once a year, or rather, three times every four years, at the end of February, the wearer of the Tonda Annual Calendar needs to set the date manually. The retrograde date indication never obscures the moon phases at 6 o’clock, showcasing this highly poetic complication. The day of the week and the month are shown in windows at 9 o’clock and 3 o’clock respectively, for perfect legibility.

The moon phase on the Tonda Annual Calendar is powered by a “precision moon phase” mechanism.  It only needs correcting once every 122 years – remarkable accuracy that requires a compensation for the difference between a classic lunar cycle (29 days and 12 hours) and the actual lunar cycle (29 days, 12 hours, 44 minutes and 2.8 seconds).

The Tonda Annual Calendar shows two representations of the moon – as viewed from both the northern and southern hemispheres – to meet the needs of wearers in any location. The moon counter and the solid rose gold moon discs stand out on an aventurine glass sky that evokes the poetic beauty of a galaxy full of twinkling stars.

Compared to its predecessor, the Tonda Quator launched in 2011, the Tonda Annual Calendar is notable for its understated character and legibility. The designers have enlarged the bezel to reveal as much of the dial as possible. The minute track and indices sit on the outside, producing a floating effect and guaranteeing highly accurate time reading. The numerals on the retrograde date are arranged on the inside, harmoniously encompassing the day and month counters.

The dial is constructed in several levels, and the three-dimensional arrangement of the various counters creates its relief and richness. The hands are slimmer and more elongated than previously, although their proportions are perfectly in line with the golden ratio beloved of Michel Parmigiani.

The Tonda Annual Calendar is available in two versions: a rose gold case with a white grained dial or with a white gold case with a black opaline dial.

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 movement is ornamented in line with Haute Horlogerie standards, featuring hand-bevelled bridges with Côtes de Genève decoration and an oscillating weight in solid rose gold adorned with a guilloché barley grain motif.

Technical details
References
PFC272-1002401-HA1442
PFC272-1201400-HA1442

Movement
PF339
Winding: Self-winding
Power reserve: 50 hours
Barrel(s): Two series-coupled barrels
Frequency: 4 Hz – 28,800 Vib/h
Dimensions: 12 ”’ – Ø 27.1 mm
Thickness: 5.5 mm
Components: 359
Jewels: 32

Functions
Hours, minutes, seconds
Annual calendar
Retrograde date
Precision moon phase

Case
Shape: Round
Dimensions: Ø 40 mm
Material: 18 ct rose gold or 18 ct white gold
Finish: Polished
Water resistance: 30 m
Case-back: Sapphire
Crystal: Anti-reflective sapphire

Dial
Colour: White or black
Finish: Grained or opaline
Indices: 18 ct rose gold with luminescent coating
Hands: Delta-shaped with luminescent coating

Strap
Leather: Black alligator
Brand: Hermès

Buckle
Buckle: Folding
Material: 18 ct rose gold or 18 ct white gold

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