Portuguese Perpetual Calendar

The perpetual calendar's double moon phase display mirrors the moon's appearance in the northern and southern hemispheres, so whether you are in Tokyo or Sydney, you can keep track of the moon's phases correctly.
The moon phase display on the Portuguese Perpetual Calendar is accurate to just one day in 577.5 years. The model with the double moon phase display mirrors the moon's appearance in the northern and southern hemispheres. The entire moon phase display forms a star-studded night sky, as if the moon and stars were floating in the distant universe. In addition, the dial is adorned with the railway track minute scale that is a hallmark of the Portuguese collection. This elegant timepiece has almost everything one could wish for: perpetual calendar, four-digit year display, seven-day automatic movement with Pellaton winding mechanism, and power reserve indicator. Powering the watch is an IWC-manufactured 52000-series caliber movement featuring a solid red gold rotor and blued steel screws. 18K white gold case, blue dial, front glass with arched edges, black Alligator leather strap.