Tonda PF Hijri Perpetual Calendar

BHD 26,500.000

The TONDA PF Hijri Perpetual Calendar represents a modern interpretation of the Tabular Islamic calendar, which was devised by Muslim scholars and astronomers in the 8th century. This ancient system enabled historians to convert dates from the Islamic calendar to the Gregorian calendar, facilitating the creation of the Hijri Perpetual Calendar. The inception of the Hijri calendar is dated back to 622 CE, commemorating the Prophet Muhammad's migration (Hijrah in Arabic) from Mecca to Medina, presently within the borders of Saudi Arabia.

Differing from the solar-based Gregorian calendar and the lunisolar Chinese Xiali calendar, the lunar Hijri calendar follows the moon's phases. This results in a repeating 30-year cycle, with each year comprising 12 months that vary between 29 and 30 days. Within this cycle, there are 19 common years that have 354 days and 11 leap years that span 355 days.


We view calendars not only as instruments of measurement but as true mirrors of the civilizations that conceived them. This recognition of calendars as expressions of cultural diversity guides our design process, encouraging us to integrate the specificities of each society into our timepieces.


Caliber PF009

Power reserve:48 hours

Frequency: 4 Hz - 28.800 A/h

No. of components: 310

Jewels: 32

Thickness: 5,7

Case Stainless steel / 950 Platinum

Diameter: Ø 42.0 mm

Thickness: 11,2

Glass: ARunic anti-reflective sapphire

Case back: Sapphire

Water resistance: 100 m



Finishing: Guilloché Grain d'orge

Indices: 18-ct gold appliques plated

Color: Viridian Green

Hands Hours and minutes: Delta-shaped

Bracelet Stainless steel



The TONDA PF Hijri Perpetual Calendar is equipped with the Caliber PF009 automatic movement, which operates at 28,800 vibrations per hour (4 Hz) and has a power reserve of 48 hours. The intricate movement has beveled bridges. The skeletonized rotor is chiseled from platinum with a polished and sandblasted finish. Like the case and dial, it is meticulously finished with Côtes de Genève and perlage throughout.

Movement specifications

Calibre: PF009

Winding: Automatic

Total dimensions: 15''' - Ø 33.3 mm

Thickness: 5,7

Frequency: 4 Hz - 28.800 A/h

Power Reserve: 48 hours

NB of components: 310

NB of jewels: 32