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IW504101

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Portugieser Sidérale Scafusia

Variation — Black, Platinum case Size guide

Platinum case, Manual-winding, Diameter 46.0 mm, Black dial, Black alligator leather strap, Strap width 22.0 mm.

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Constant-force tourbillon | IWC Schaffhausen

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

Watch Details

case
Movement
Features

case

Platinum case
Diameter 46.0 mm
Height 17.6 mm
See-through sapphire glass back
Water resistance 3.0 bar

Movement

94900 Calibre
IWC-manufactured movement
Manual-winding
96 hours power reserve
Frequency 18'000 VPH (2.5 Hz)
56 Jewels
Sand-blasted

Features

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

Care For Your Watch

Complete Service

It involves a full overhaul of the timepiece and is a complex, largely manual task that takes several hours.

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HOW-TO TIPS

Learn how to clean your watch, wind it and more in our six-part “How To…” video series.

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OFFICIAL DOCUMENTS

Download manual

Download catalog extract

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Exclusive Service

SHIPPING & DELIVERY

We offer three methods of delivery:

Standard: 5-7 business days* Express: 2 business days* Urgent: next business day**

Orders purchases online or by phone can be returned within 30 days free of charge.

SHIPPING AND DELIVERY CONDITIONS

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EXTENDED WARRANTY

Register to become a member of my IWC and benefit from a 6-year extension to the standard 2-year international limited warranty.

Portugieser Sidérale Scafusia

The most complex watch made by IWC Schaffhausen is also a personalized astronomical instrument: the back of the watch shows the night sky as you see it from your own home.

Portugieser Sidérale Scafusia

The most complex watch made by IWC Schaffhausen is also a personalized astronomical instrument: the back of the watch shows the night sky as you see it from your own home.

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.

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Portugieser Sidérale Scafusia

Constant-force tourbillon | IWC Schaffhausen

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Watch Details

case

Movement

Features