IWC Da Vinci

Da Vinci Perpetual Calendar Chronograph

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  • Price
  • Pre-Order
  • Reference IW392101
  • Case Material 18-carat red gold
  • Bracelet/Strap dark brown alligator leather strap
  • Dial Colour silver-plated
  • Jewels 51
  • Calibre 89630
  • Mechanical chronograph movement
  • Self-winding
  • IWC-manufactured 89630 calibre (89000-calibre family)
  • 68-hour power reserve when fully wound
  • Perpetual calendar with displays for the date, day, month, year in four digits and perpetual moon phase
  • Stopwatch function with hours, minutes and seconds
  • Hour and minute counters combined in a totalizer at 12 o’clock
  • Flyback function
  • Small hacking seconds
  • Glucydur®* beryllium alloy indexless balance with high-precision adjustment screws on balance rim
  • Rotor in 18-carat red gold
  • Sapphire glass, arched edge, antireflective coating on both sides
  • See-through sapphire glass back
  • Water-resistant 3 bar
  • Case height 15.5 mm
  • Diameter 43 mm
  • Alligator leather strap by Santoni
  • *IWC Schaffhausen is not the owner of the Glucydur® trademark.

  • Price
  • Pre-Order
  • Reference IW392103
  • Case Material stainless steel
  • Bracelet/Strap black alligator leather strap
  • Dial Colour slate-coloured
  • Jewels 51
  • Calibre 89630
  • Mechanical chronograph movement
  • Self-winding
  • IWC-manufactured 89630 calibre (89000-calibre family)
  • 68-hour power reserve when fully wound
  • Perpetual calendar with displays for the date, day, month, year in four digits and perpetual moon phase
  • Stopwatch function with hours, minutes and seconds
  • Hour and minute counters combined in a totalizer at 12 o’clock
  • Flyback function
  • Small hacking seconds
  • Glucydur®* beryllium alloy indexless balance with high-precision adjustment screws on balance rim
  • Rotor in 18-carat red gold
  • Sapphire glass, arched edge, antireflective coating on both sides
  • See-through sapphire glass back
  • Water-resistant 3 bar
  • Case height 15.5 mm
  • Diameter 43 mm
  • Alligator leather strap by Santoni
  • *IWC Schaffhausen is not the owner of the Glucydur® trademark.

Perpetual Calendar

The current century slide bears the numbers 20, 21 and 22 and will thus come to the end of its service life on 31 December 2299; but even now, IWC supplies the century slide bearing the figures 22, 23 and 24 for the years 2200 to 2499.

The moon phase display used in the Portugieser Grande Complication is astonishingly accurate and deviates by just 0.002 per cent, or 1 day, in 122 years.

The Portugieser Perpetual Calendar is even more precise. Larger moon phase wheels with a higher number of teeth reduce the deviation so drastically that a future inheritor of the watch would theoretically need to take it to a watchmaker to have it adjusted by only 1 day after 577.5 years.

The moon of the Da Vinci Perpetual Calendar Chronograph is just three millimetres and placed on a sub dial at 12 o’clock. Its Perpetual Calendar functions have the same precision as the Portugieser Perpetual Calendar’s.

RENDEZVOUS BETWEEN MOON AND CHRONOGRAPH

The new IWC-manufactured 89630 calibre in the Da Vinci Perpetual Calendar Chronograph is the first from IWC to combine the double chronograph counter with Kurt Klaus’s moon phase system and place them both on a subdial. The moon itself is just three millimetres and remains stationary against the night sky while the moon phase disc below the dial, acting as a shadow of the earth, depicts the waxing and waning moon. The perpetual calendar functions with the same precision as in the Portugieser Perpetual Calendar: in 577.5 years, the display will diverge by just one day from the moon’s actual course. For the chronograph, the design engineers likewise made no concessions. The hour and minute counters are combined in a totalizer at “12 o’clock”, which enables stopped times to be read off as if they were the time of day. Stopped times are shown to an accuracy of a quarter of a second by the central blue chronograph seconds hand. The flyback function enables the chronograph to exit a current measurement instantaneously, without an in termediate stop, and to start a new one immediately. In the red gold model, the Reference IW392101, the case, lugs, crown and push buttons are made of solid 18-carat red gold. The dark brown alligator leather strap by Santoni is likewise fastened securely to the wrist by a folding clasp in gold. In the stain less-steel Reference IW392103 with its black leather strap by Santoni, the slate-coloured sub dials are covered with a thin coating of rhodium, which gives them a distinctive cool and silvery appearance. The Da Vinci Perpetual Calendar Chrono graph has an impressive case diameter of 43 millimetres, an equally striking case height of 15.5 millimetres as well as a sapphire-glass back that reveals the complex design of the watch movement with blued screws and unique decorative polishing on the bridges.

reference 3921

The new in-house 89630 calibre in the Da Vinci Perpetual Calendar Chronograph is IWC’s first model to combine the double chronograph counter with the moon phase complication in a single subdial. The moon phase display is so accurate that it will deviate from the actual state of the moon by just one day in 577.5 years. The hour and minute counters are combined in a subdial at “12 o’clock”.

Highlights

  • Mechanical chronograph movement
  • Self-winding
  • 68-hour power reserve
  • Perpetual calendar with moon phase
  • Flyback function
  • Diameter 43 mm

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