The Tonda PF Hijri Perpetual Calendar is a horological expression of the Tabular Islamic calendar which was developed by Muslim scholars and astronomers in the 8th century. This system makes it possible for historians to convert Islamic dates to Gregorian dates and also makes the Hijri Perpetual Calendar possible.
Specifications
Case
Shape
round
Glass
ARunic anti-reflective sapphire
Case Back
sapphire glass
Case Material
Polished and satin-finished stainless steel
Bezel Material
platinum 950 knurled bezel
Diameter
42 mm
Thickness
100 m
Dial
Colour
Viridian green
Hour Markers
Hours and minutes: 18ct gold rhodium-plated skeleton delta-shaped, Seconds and calendar: rhodium-plated steel
Power Reserve
48 hours
Movement and Functions
Movement
automatic movement
Caliber
Caliber PF009
Functions
Hours, minutes, seconds, Hijri perpetual calendar and precision moon phase
