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

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

Made in Schaffhausen, Switzerland.

Brand : IWC SCHAFFHAUSEN
Model Number : IW590303
Gender : Mens
Material : Gold
Movement : IWC-manufactured movement, Manual-winding
Calibre : 94805 Calibre
Crystal : Sapphire glass, convex, antireflective coating on both sides
Functions : Tourbillon with integrated constant-force mechanism, Moon phase display, Power reserve display
Water Resistance : 6 Bar
Bracelet Strap : Brown calfskin strap, Strap width 22 mm
Power Reserve : 96 hours Power Reserve


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

BIG PILOT’S WATCH CONSTANT-FORCE TOURBILLON EDITION “LE PETIT PRINCE”

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

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.

IWC integrated a patented constant-force mechanism into a tourbillon, which ensures that the amplitude of the balance – and thus the watch’s accuracy – remain absolutely constant, initially by disconnecting the escapement from the direct flow of energy generated by the gear train. The energy is stored temporarily in a balance spring and dispensed to the escape wheel. In the process, the tension in the spring is increased once a second and the seconds hand in the tourbillon advances in one-second steps. This ensures an extremely regular and precise rate over a period of at least 48 hours. After approximately 2 days, the mechanism switches from constant-force mode to normal mode, as indicated by the one-fifth-of-a-second movements in the seconds hand.

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.

Feature - 0 Big Pilot’s Watch Constant-Force Tourbillon Edition “Le Petit Prince”
Feature - 1 Big Pilot’s Watch Constant-Force Tourbillon Edition “Le Petit Prince”
Feature - 2 Big Pilot’s Watch Constant-Force Tourbillon Edition “Le Petit Prince”
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