IWC Celebrates 140 Years Of Mercedes-Benz With A Big Pilot Perpetual Calendar
IWC Schaffhausen and Mercedes-Benz mark an important anniversary with a new limited-edition timepiece that combines the aviation-inspired character of the Big Pilot with one of IWC’s most sophisticated calendar mechanisms. The Big Pilot’s Watch Perpetual Calendar ProSet 140 Years Mercedes-Benz (IW329603) commemorates 140 years of Mercedes-Benz with a distinctive black-and-gold aesthetic and the technically innovative ProSet perpetual calendar.
Limited to just 140 pieces, the watch brings together a robust stainless-steel case, a highly legible perpetual calendar display and IWC’s Calibre 82655, which allows the calendar indications to be adjusted directly through the crown.
Big Pilot design in a 42.9mm case
The watch uses the contemporary Big Pilot case measuring 42.90 mm in diameter, giving the traditionally imposing pilot’s watch a more compact footprint while retaining its characteristic design language.

The stainless-steel case features the familiar broad dial opening, slim polished bezel and distinctive diamond-shaped crown associated with the Big Pilot collection. A sapphire crystal protects the dial, while a second sapphire window on the caseback provides a view of the movement.
Despite housing a complex perpetual calendar, the watch offers 100 metres of water resistance, adding a level of everyday practicality that is not always associated with highly complicated calendar watches.
Black dial with solid-gold details
The visual identity of the IW329603 is built around the contrast between a gloss-black dial and gold accents.
Applied markers made from solid gold frame the dial, while the characteristic Big Pilot-style hands receive a gold-plated finish. The calendar displays are integrated into the dial through recessed subdials, creating a layered appearance without compromising the overall clarity of the design.

The perpetual calendar provides indications for the date, day, month and year, while a double moon-phase display occupies the upper portion of the dial. The four-digit year indication is particularly useful for identifying the leap-year cycle managed by the mechanism.
For improved readability in low-light conditions, the hands and hour markers are treated with Super-LumiNova.
IWC’s ProSet perpetual calendar
The technical centrepiece of the watch is IWC Calibre 82655, an automatic movement incorporating the brand’s ProSet perpetual calendar system.
Traditional perpetual calendars can require multiple correctors or tools to adjust their various indications. IWC’s ProSet architecture takes a different approach, allowing the calendar to be adjusted bidirectionally through the crown.

At the heart of the system is a stacked programme wheel that coordinates the calendar indications. The mechanism uses a relatively compact assembly of around 20 components to control the different calendar functions.
A dedicated leap-year mechanism also accounts for February’s variable length, automatically distinguishing between regular years and leap years. As a result, the perpetual calendar can maintain the correct date, day, month and year indications without requiring manual correction for the differing lengths of the months.
The movement is visible through the sapphire caseback, offering a view of the mechanical architecture behind the calendar system.
Designed for everyday versatility
IWC pairs the watch with a black rubber strap, reinforcing the sporty side of the Big Pilot while complementing the black-and-gold dial. The strap is fitted with a folding clasp and incorporates IWC’s EasX-Change system, allowing it to be exchanged without requiring specialist tools.

This combination of a rubber strap, 100-metre water resistance and 42.9mm case gives the perpetual calendar a more versatile character than its level of mechanical complexity might suggest.
A 140-piece Mercedes-Benz anniversary edition
The IWC Big Pilot’s Watch Perpetual Calendar ProSet 140 Years Mercedes-Benz IW329603 is limited to 140 pieces worldwide, corresponding to Mercedes-Benz’s 140th anniversary.
The collaboration continues the long-running relationship between IWC Schaffhausen and Mercedes-Benz, which has produced numerous watches connected to both the automotive manufacturer and its motorsport activities.
With its black-and-gold execution, Big Pilot case and ProSet perpetual calendar, the IW329603 combines the visual identity of IWC’s aviation-inspired collection with one of its most technically distinctive calendar movements.
The watch is priced at € 40,900 including VAT.
Read more here.
General Specifications:
Brand: IWC
Model: Big Pilot’s Watch Perpetual Calendar Proset 140 Years Mercedes-Benz
Reference: IW329603
Dial: Black
Lume: Super-LumiNova
Case Material: Stainless steel
Case Dimensions: 42.90 mm Diameter, 14.30 mm thickness
Crystal: Sapphire glass
Case Back: Sapphire glass
Water Resistance: 100 Meters
Strap: Black rubber strap with EasX-Change system
Calibre: IWC 82655
Functions: Hours, minutes, seconds, date, day of the week, month, year, moon phase for northern and southern hemispheres
Winding: Automatic
Frequency: 4 Hz (28,800 Vph)
Jewels: 34
Components: 280
Power Reserve: 60 Hours
Price: € 40,900
Availability: Now
Limited Edition: Yes, 140 pieces



























