The largest IWC automatic movement on the market, the 51011 calibre, is now more suitably sized for a slender wrist. Housed in the new 18 CT Red gold together with other new and more advanced features such as the convex, coated sapphire glass, the two-piece case or the back with its screw thread and sapphire glass, the Portuguese Automatic is the watch that would be developed in Schaffhausen today if those two Portuguese businessmen were to drop in with a request for an unusually large and precise wristwatch.