Big Pilot's Watch Perpetual ProSet 140 Years Mercedes-Benz (IW329603)

The IWC Big Pilot's Watch Perpetual Calendar ProSet 140 Years Mercedes-Benz IW329603 combines a 42mm stainless steel case with a black dial and solid gold appliqués, seamlessly bridging IWC's four-patent perpetual calendar breakthrough with 22 years of shared engineering heritage alongside Mercedes-Benz. Limited to just 140 pieces — one for every year of Mercedes-Benz's automotive history — the reference pays tribute to a partnership IWC CEO Chris Grainger-Herr has called "a friendship, built on mutual respect and deep admiration."

• Perpetual Calendar ProSet: IWC's four-patent Perpetual Calendar ProSet advances every display — day, date, month, four-digit year, and moon phase — forward or backward from a single crown position, eliminating the pushers perpetual calendars have relied on for decades.
• Double Moon® Phase Display: Tracking lunar phases for both the northern and southern hemispheres simultaneously, the display holds to within one day of accuracy for 1,040 years, its components produced using IWC's LIGA lithography process.
• Case & Strap: 42mm brushed and polished stainless steel case with a sapphire caseback engraved with Mercedes-Benz's original 1926 logo, fitted on a black rubber strap with IWC's tool-free EasX-CHANGE® system.
• Black Dial: Black dial with solid gold appliqués and gold-plated hands, a white-printed minute track for legibility, and four subdials tracking the date, month, day of the week, and moon phase.
• Automatic Movement: Powered by the self-winding IWC-manufactured Calibre 82665 with a nickel-phosphorus escapement, silicon hairspring, and bidirectional Pellaton winding delivering a 60-hour power reserve.