HANDOUT - The back of the Big Pilot?s Watch Perpetual Calendar Edition ?Le Petit Prince? (Ref. IW502801) with a platinum case shows the impressive IWC-manufactured 51613 calibre with Pellaton automatic winding and a 7-day power reserve, as well as an 18-carat gold medallion engraved with an image of the little prince. (PHOTOPRESS/IWC)