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

Text: Igor Sertić
Photo: IWC Schaffhausen

The Big Pilot’s Watch Constant-Force Tourbillon Edition “Le Petit Prince” is the first pilot’s watch from IWC with a constant-force tourbillon. For the first time, the Swiss watch manufacturer has used hard gold for the watch case – a significantly harder and more wear-resistant version of red gold

The Big Pilot’s Watch Constant-Force Tourbillon Edition “Le Petit Prince” (Ref. IW590302 and IW590303) are the first pilot’s watches from IWC with a constantforce tourbillon. It is available with either a hard gold or platinum case, each of which is limited to 10 watches in each material.
– Platinum case, blue dial, rhodium-plated hands, brown calf leather strap (Ref. IW590302)
– 18 carat hard gold case, blue dial, gold-plated hands, brown calf leather strap (Ref. IW590303)
This is the first time IWC has produced a watch with hard gold, a special new version of red gold. The microstructure of the alloy is modified in a sophisticated manufacturing process. Hard gold is therefore significantly harder and around 5 to 10 times more wear-resistant than conventional red gold. As a result, the material is perfectly suited to the large case and the crown of a Big Pilot’s Watch.

IWC Schaffhausen Big Pilot’s Watch Constant-Force Tourbillon Edition "Le Petit Prince"

The patented constant-force tourbillon is the IWC engineers’ answer to a centuries-old challenge in the field of watchmaking: As the tension in the spring of a mechanical wristwatch slackens over time, less force is transferred to the escapement via the dial train, which in turn decreases the amplitude of the balance. This has a negative impact on the precision of the watch. The patented constant-force mechanism separates the escapement from the direct flow of force from the dial train and with every second re-tensions a balance spring, which serves as temporary energy storage and transfers absolutely even force pulses to the escape wheel. Integrated into a tourbillon, which also eliminates the influence of gravity on the oscillating system, the result is extraordinary precision.

IWC Schaffhausen Big Pilot’s Watch Constant-Force Tourbillon Edition "Le Petit Prince"

The IWC-manufactured calibre 94805 combines a constant-force tourbillon with a perpetual moon phase display, which takes 577.5 years to require adjustment by one day. The “Petit Prince” stands on the moon. Two barrels store enough power for 96 hours. A display notifies the wearer of the remaining power reserve.

IWC Schaffhausen Big Pilot’s Watch Constant-Force Tourbillon Edition "Le Petit Prince"

SAT

Ref. IW590303: 18 karatno tvrdo zlato kućišta, plavi brojčanik, pozlaćene kazaljke, smeđi teleći remen

Kristalno safirno staklo, anti refleksirajući premaz obostrano

Vodonepropusnost 60 m

Promjer 46,2 mm

Visina 13,5 mm

MEHANIZAM

Kućni IWC kalibar 94805

Frekvencija 18.000 vph / 2,5 Hz

Rubina 41

Rezerva snage 4 dana (96 sati)

Ručno navijanje

CIJENA: 238.000 EUR