The newly released IWC Schaffhausen Portugieser Perpetual Calendar Tourbillon (Ref. 5045) brings together the two complications that give the watch its name. Two References are available, both limited to 50 each. One will be available as a Boutique Edition with an 18-carat Armor Gold® case, while the second will be available in platinum.
The IWC-manufactured 51950 calibre combines a perpetual calendar with a tourbillon that has 82 individual parts and weighs only 0.635 grams. To make it visible at 12 o’clock, the calendar module’s advance ring was opened, and the moon phase integrated into the month display at 6 o’clock.
With its 18-carat gold rotor, the automatic winding system builds up a large, seven-day power reserve. The perpetual calendar’s mechanical programme automatically recognises the different lengths of the months and adds an extra day at the end of February every four years. The moon phase display is so precise that it will need adjusting by one day after 577.5 years.
Model: Portugieser Perpetual Calendar Tourbillon Ref.IW5045
Perpetual calendar with displays for the day, date, month, year in four digits and perpetual moon-phase
Flying minute tourbillon at 12 o‘clock
Power reserve display
IWC manufacture calibre 51950
Frequency: 19,800 vph/2.75 Hz
Power reserve: 7 days (168 h)
18-carat gold oscillating weight
Case, dial and strap
Ref. IW504504: 18-carat Armor Gold® case, blue dial, gold-plated hands, 18-carat gold appliques, 18-carat gold oscillating weight, blue alligator leather strap by Santoni
Ref. IW504505: Platinum case, silver-plated dial, rhodium-plated hands and appliques, 18-carat gold oscillating weight, blue alligator leather strap by Santoni
Glass: Sapphire, arched edge, anti-reflective coating on both sides
Water-resistant: 3 bar
Diameter: 45 mm
Height: 15.3 mm
See-through sapphire glass back
Limited to 50 watches