Hello I have an IWC Ingenieur plant earth 2007 the 80110 cal is confusing me it has a power reserve of 44hrs but when fully wound and stored upright in its box it runs for 50hrs I’m just worried that’s something is wrong as in not genuine I bought it from the major Uk used watch dealer and I’ve owned way to many expensive watches for 3 decades and everything looks perfect but does anyone have this movement and know it running time when fully wound and left to stop ?
Thank you so much in advance :)
Kindest regards Martin