Launched at SIHH 2015, the 5007 is IWC's updated version of the Portugieser (formerly Portuguese) Automatic. It's movement now sports two barrels ensuring the power reserve of 168 hours when fully wound and the Pellaton winding mechanism is updated. In terms of design, the changes are subtle yet very noticeable in real life; most apparent are the curved glass and the 'ergonomiccaly optimized' lugs - reminscent perhaps of the IWC Portuguese 2000 of the year 2000, which was the first Portugieser with a 7-day movement.
Reference IW5007-07 has a Stainless Steel case and a light grey dial. It was a limited edition of 55 pieces for the Ginza IWC boutique.