IWIW504101-Portugieser Sidérale Scafusia

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IW504101

Portugieser Sidérale Scafusia Add to my wishlist

Price excluding taxes and including shipping.
Price excluding taxes and including shipping.

Platinum case, Manual-winding, Diameter 46.0 mm.

Made in Schaffhausen, Switzerland.

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An IWC Schaffhausen Concierge will be happy to help you complete your purchase or answer any questions

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An IWC Schaffhausen Concierge will be happy to help you complete your purchase or answer any questions

Or send us a message through our online form 

IW504101 Specifications

case

case

  • Platinum case
  • Diameter 46.0 mm
  • Height 17.6 mm
  • See-through sapphire glass back
  • Water resistance 3 bar

Movement

Movement

  • 94900 Calibre
  • IWC-manufactured movement
  • Manual-winding
  • 96 hours Power Reserve
  • Frequency 18000.0 vph (2.5 hz)
  • 56 Jewels
  • Sandblasted, rhodium-plated

Features

Features

  • Tourbillon with integrated constant-force mechanism
  • Perpetual Calendar with leap year display and absolute day of the year
  • Power reserve display
  • Celestial chart showing horizon
  • Customized celestial chart
  • Sunrise and sunset together with displays for day, night and twilight
  • Ecliptic and celestial equator
  • Sidereal time
  • Sapphire glass, convex, antireflective coating on both sides

dial

dial

  • Black dial

Strap

Strap

  • Black alligator leather strap
  • Strap width 22 mm

The Portugieser Sidérale Scafusia Story

The dial, in the style of a classic Portugieser, features a constant-force tourbillon together with displays for the 96-hour power reserve and sidereal time, which, among other things, is needed to find the same star each night in the same position. The reverse side is a fabulous astronomical module calculated precisely to reflect the owner’s wishes. From a previously defined location, the rotating night-sky disc shows more than 500 stars and constellations with such detail and precision that it would quicken the pulse of any astronomer. Making the necessary allowances for summer time and winter time, the watch also displays the times of sunrise and sunset, sidereal time and a perpetual calendar with the leap years. In view of the enormous amount of work involved and the more than 200 individual configurations possible, only a few watches are produced each year.

Calibre Family 94000

The hand-wound movement features two barrels including the constant-force tourbillon, the astronomical module in the Portugieser Sidérale Scafusia and the digital Pallweber display.

Perpetual calendar

The perpetual calendar is one of the most fascinating haute horlogerie complications: It is mechanically programmed for 577 years.

Constant-force tourbillon

With the patented constant-force tourbillon, IWC elegantly combines two complications that serve to increase timekeeping precision.

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