Parmigiani Fleurier boasts a prestigious collection of both hand-wound and automatic movements developed by its manufacturing team. These include the Perpetual Calendar, Tourbillons, ultra-slim model, chronograph, Bugatti and the Hemispheres, but an Annual Calendar was missing from this collection. 2011 marks the completion of the development of this innovative new complication. The Tonda collection, with its timeless round shape (diameter 40 mm, thickness 11.2 mm), has been chosen to showcase this new development.

The development of this new complication is based on the brands PF 331 automatic movement, with the incorporation of a new additional Parmigiani module, creating the PF 339 Annual Calendar. Valued for its everyday practicality, the Annual Calendar automatically accounts for the variation in the number of days in each month. Only one manual correction needs be made each year, (for the month of February in non-leap years). In a leap year, the date will display the 29 February and will automatically move to the 1 March the following day.

The automatic model of the Tonda Annual Calendar, features a hand which indicates the date from 1-31 on the retrograde sector on the outer dial. The day of the week is positioned at 9 o’clock and the month, shown as a number from 1 to 12, is at 3 o’clock. Appreciated for the clarity of its progression, the precision moon, developed in the Parmigiani workshops, completes the indications of this Calendar model. Only requiring one correction every 120 years, it helps reduce the discrepancy 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). It offers two indications for the moon; one for the Northern hemisphere and one for the Southern hemisphere, the moon shines with a precious intensity which is complemented by the rose gold detailing.

Manufactured in Fleurier, in the Farmigiani Fleurier dial production unit, the face of the Tonda Annual Calendar can be either silver or charcoal grey and features a delicate grained decoration or a barley grain in the centre and a black or silvered opaline ring. The case is available in rose gold or white gold and is also manufactured at Parmigiani. This new exceptional timepiece is then finished with a Hermès alligator strap.

Model	:	Tonda Retrograde Annual Calendar
Movement	:	PF 339, self-winding Retrograde Annual Calendar (one correction per year in February, except for leap years).
Functions	:	Hour, minute, seconds Date Day Month Precision moon phase (one correction every 120 years).
Exterior	:	3-part round case.
Diameter	:	∅ 40 mm.
Thickness	:	11.2 mm.
Material	:	150 PD white gold or 18 ct rose gold. Polished finish.
Water resistance	:	30 m.
Crystal	:	Anti-reflective sapphire.
Crown	:	Ø 6 mm.
Case-back	:	with sapphire crystal.
Numbers	:	Individual number engraved on the case-back.
Dials	:	2 variants: "Yellow silvered graining" and "Black barley grain". Opaline outer, spindle-shaped applique indexes, Delta-shaped hands with luminous coating.
Leather	:	Hermès alligator with 18 ct ardillon buckle, polished finish.