I've had nothing but problems with two IWC watches belonging to my son (Spitfire Mark XV) and me (Portofino), both automatics. The Spitfire has been sent back to Schaffhausen four times for repair work. According to my son, it is finally functioning properly presently. My Portofino has never worked normally since I bought it several years ago. The problems persisted despite four repair attempts by Schaffhausen, including de-magnetisation and replacement of the movement. It is presently on its way or is at Schaffhausen the FIFTH time for evaluation. Although an automatic, it continually stops running in the early hours of the day after being worn normally the day before. Also, it is slow by 30 seconds to a minute each day (according to IWC a mechanical automatic watch should not be off by more than 5 seconds a day). The only saving grace has been IWC's free repair service the past four times. Nevertheless, I am disgusted with the performance of this watch. i have reached the point that I am prepared to demand the substitution of my calibre with another more dependable calibre of similar value. I have strong doubts now about either the quality of repair work by Schaffhausen or the adequate functioning of this calibre model. Is it really an automatic movement or do I actually own a semi-automatic watch? What is the matter with IWC, selling this JUNK watch? Its functioning certainly besmirches the reputation of this brand.