====== IWC Portugieser Sidérale Scafusia ======
On its release in [[2011]], the **Portugieser Sidérale Scafusia** was the most [[complicated]] [[IWC]] watch ever made.

Powered by the then-new [[double barrel]] [[IWC 94900|Cal. 94900]], the Sidérale Scafusia focuses on [[astronomical]] [[complication]]s above all others. It features a [[tourbillon]] and [[perpetual calendar]], but these are incidental to the main function. In fact, the calendar only displays the [[leap year]] and numbered day of the year, not the month, day, or date.

The primary function of the Sidérale Scafusia is calculation of [[sidereal]] time and a [[celestial calendar]]. Sidereal time is shown on the face in a sub-dial at 12 00 using a two-handed 24-hour display. The reverse side features the perpetual calendar and signature celestial map. The astrological chart is only accurate to a customer-chosen position on earth, but IWC claims it can accurately show the position of over 500 stars from there. It also displays [[sunrise and sunset]] time at that location.


{{tag>Watch_models IWC_models Watches_with_equation_of_time Astronomical_watches Watches_with_perpetual_calendar}}