IWIW590303-Big Pilot’s Watch Constant-Force Tourbillon Edition “Le Petit Prince”


Big Pilot’s Watch Constant-Force Tourbillon Edition “Le Petit Prince” Add to my wishlist

Price includes taxes and shipping.
Price includes taxes and shipping.

18 ct hard gold case, Manual-winding, Diameter 46.2 mm.

Made in Schaffhausen, Switzerland.

Available to buy online. Orders can be returned within 14 days free of charge.

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IW590303 Specifications



  • 18 ct hard gold case
  • Diameter 46.2 mm
  • Height 13.5 mm
  • Screw in crown
  • See-through sapphire glass back
  • Water resistance 6 bar



  • 94805 Calibre
  • IWC-manufactured movement
  • Manual-winding
  • 96 hours Power Reserve
  • Frequency 18000.0 vph (2.5 hz)
  • 341 Components
  • 41 Jewels
  • Côtes de Genève



  • Tourbillon with integrated constant-force mechanism
  • Moon phase display
  • Power reserve display
  • Sapphire glass, convex, antireflective coating on both sides
  • Limited to 10 pieces



  • Blue dial with luminescence



  • Brown calfskin strap
  • Strap width 22 mm

The Big Pilot’s Watch Constant-Force Tourbillon Edition “Le Petit Prince” Story

For this watch, and for the first time ever, IWC has produced a case machined from 18-carat hard gold, a special variant of 5N gold. The sophisticated production process alters the alloy's microstructure, making hard gold significantly harder and around 5 to 10 times more wear-resistant than conventional 5N gold. The hard gold case and crown also create a beautiful contrast to the blue dial. The patented constant-force mechanism disconnects the escapement from the direct flow of energy transmitted through the wheel train and, second by second, increases the tension in a balance spring. The latter stores the energy temporarily before dispensing it in absolutely even impulses to the escape wheel. Together with the tourbillon, it guarantees an extraordinarily high level of precision. The IWC-manufactured 94805 calibre also features a perpetual moon phase display. The little prince stands on the moon. A 96-hour power reserve is stored in two barrels.

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.

Moon phase display

IWC’s moon phase displays are not just aesthetic works of art – they are extremely precise and diverge from the actual phase of the moon by just 1 day in 577.5 years.

Constant-force tourbillon

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



Big Pilot’s Watch Constant-Force Tourbillon Edition “Le Petit Prince”

18 ct hard gold case Blue dial Brown calfskin strap

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