The movement inside the Ingenieur is IWC’s in house Accutron Men's Gemini Automatic Skeleton Window Watch #26A09 caliber 80110. A common misunderstanding seems to be that this movement is based on ETA/Valjoux 7750. It’s not. As ‘Vorollo’ put it on the IWC forum over at TimeZone: “The original target was to get a highly robust, easy to service and maintain movement which plays in the same “durability-field” as e.g. the Rolex 3135 and the new JLC calibers 972/975/977 etc. Following this target, IWC decided to choose the proven 7750-base as a source of inspiration. Therefore, the 80110 became a mixture of the strengths of the solid 7750-construction and the legendary IWC pellaton winding system, accompanied by IWC’s general quality standards and production Accutron Men's Gemini Automatic Skeleton Window Watch #26A09 knowledge.
Tijdloos for a repair. Since the IWC has the little piece of dust factory-off, I do worry a bit about their quality control…It might seem that it gets a bit negative now, but these are the only two negative remarks I have about the watch. The Ingenieur is a watch for the people that enjoy the 1970s stainless steel luxury watch that Gerald Genta designed. To put it in other words: you either love it or hate it. There is nothing much in between. The out spoken design is not loved by many, so don’t expect a lot of ooohs and aaahs from people that are not into watches the same level you are. As Gerard Nijenbrinks put it in an older blog posting here, ‘these are watches which you don?¢‚Ǩ‚Ñ¢t like at first glance; you have to grow into them’. He was talking about the Vacheron Constantin 222/Overseas, PP Nautilus and AP Royal Oak Jumbo, but I feel that this comment also goes for the IWC Accutron Men's Gemini Automatic Skeleton Window Watch #26A09 Ingenieur SL and the modern versions like mine.