New Releases · 2026-04-14
IWC’s steel Le Petit Prince ProSet makes its perpetual calendar reversible
The blue-dial Big Pilot combines a 42 mm steel case with a calendar that adjusts forwards and backwards through the crown.
By Chronolume digest · Original English summary · Based on IWC official reference and dated manufacturer announcement
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What to know
The steel Big Pilot ProSet Le Petit Prince retains IWC’s familiar calendar arrangement: four subdials, a four-digit year and the Double Moon display. Applied rhodium-plated numerals and markers give the blue dial additional relief. Reference IW329601 comes with a five-link steel bracelet and an additional blue rubber strap, using EasX-CHANGE attachments.
The principal change sits inside. Calibre 82665 uses a gear-based perpetual-calendar system that can move forwards or backwards through one crown position. Pellaton automatic winding builds a 60-hour reserve. IWC lists the steel case at 42 mm across and 14 mm thick, with sapphire on both sides and 10-bar water resistance.
At a glance
| Reference | IW329601 |
|---|---|
| Case | 42 × 14 mm stainless steel |
| Dial | Deep blue; applied rhodium-plated markers |
| Movement | 82665 automatic; Pellaton winding |
| Calendar | ProSet perpetual calendar; bidirectional crown adjustment |
| Power reserve | 60 hours |
| Water resistance | 10 bar |
| Included | Steel bracelet and blue rubber strap |
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Source & attribution
IWC official reference and dated manufacturer announcement · Published 2026-04-14 ↗