
IWC Spitfire Big Pilot’s Watch Perpetual Calendar Overview
The IWC Spitfire Big Pilot’s Watch Perpetual Calendar is a standout model within the Spitfire collection, first introduced in 2019. Designed as a tribute to aviation heritage, this model merges functional military aesthetics with one of watchmaking’s most mechanically sophisticated complications: the perpetual calendar. The olive-green dial paired with a bronze case evokes the look of vintage military instruments, giving the watch a rugged yet refined appearance ideal for collectors who appreciate history, engineering, and patina.

Bronze Case and Patina Development
The watch features a 46.2 mm case with a height of 15.3 mm, offering a dominant wrist presence characteristic of the Big Pilot series. Bronze is an unusual but meaningful material choice; unlike steel or titanium, it reacts to the environment over time, forming a unique patina that reflects the lifestyle of the wearer. This evolving surface gives each example of the watch a personal identity. The combination of bronze, olive green, and gold-plated hands creates a warm, historically inspired palette consistent with the Spitfire spirit.
Perpetual Calendar and Moon Phase Display
One of the key highlights of the IWC Spitfire Big Pilot’s Watch Perpetual Calendar is its user-friendly perpetual calendar mechanism. At 12 o’clock sits a dual-hemisphere moon phase that displays the lunar cycle for both northern and southern skies. The system is extremely precise, deviating by only one day every 577.5 years. The displays are carefully arranged for legibility, maintaining the functional aviation-inspired layout of the Spitfire line.

Calendar Display Layout and Functionality
At 3 o’clock, a double-scale indicator presents the date on the outer ring and the power reserve on the inner ring. The month indicator is positioned at 6 o’clock, while between 7 and 8 o’clock sits the four-digit year display. A weekday display and small seconds appear at 9 o’clock. The clever engineering of IWC’s perpetual calendar module ensures that month lengths, leap years, and moon phases are all synchronized and adjustable through a single crown, without the need for corrector pushers.

Movement and Technical Performance
Inside the watch is the in-house Caliber 52615 automatic movement, running at 28,800 vibrations per hour. Its dual-barrel construction and ceramic Pellaton winding system deliver an impressive 7-day power reserve. Through the sapphire crystal caseback, the movement’s perlage, Côtes de Genève, and openworked rotor can be admired. IWC’s emphasis on durability and efficiency ensures reliability suitable for a pilot-inspired timepiece.
Edition Details and Wearing Experience
This IWC Spitfire Big Pilot’s Watch Perpetual Calendar was released in a limited edition of 250 pieces. It is fitted with a textured brown calfskin strap that complements the bronze case. The original retail price was €31,900. The 60-meter water resistance rating makes it practical for everyday use while retaining the sophistication expected from a high-complication pilot’s watch.





Technical Summary
IWC Spitfire Big Pilot’s Watch Perpetual Calendar
Bronze case, 46.2 mm diameter, 15.3 mm thickness, sapphire crystal caseback, gold-plated hands, Caliber 52615 automatic movement, 54 jewels, 28,800 vph, 7-day power reserve, calfskin strap, 60 m water resistance.
Complication: perpetual calendar and dual-hemisphere moon phase.
Learn more about perpetual calendar mechanisms at Hodinkee.
