THE JOURNAL
A sophisticated timepiece, the IWC Big Pilot's Heritage Watch 48
Watch reference: IW510301.

Overall, apart from the difference in size, the Big Pilot's Heritage Watch 48 and the Big Pilot's Watch 55 show very little other variation, sharing an extremely similar exterior design.From the dial design and the colour of the luminescent numerals to the propeller-style hands and conical crown, right down to the historical leather strap, the watch appears to have travelled back in time to the era of aviation pioneers, whilst still highlighting the exquisite craftsmanship of modern IWC.


Big Pilot's Heritage Watch 48The case measures 48 mm in diameter, making it slightly smaller and better suited for daily wear.Titanium case material. Featuring ultra-light properties with a weight of just 120 g, it offers the same light and comfortable wear on the wrist as the 183 g original stainless steel model.

The larger dial better satisfies the pilot's requirement for clear numerical markings and simple, straightforward reading methods. The dial design is guided by historical cockpit instrument layouts, enabling technical values to be read quickly and reliably even in poor lighting conditions. The dial is finished in a matt black, and the Super-LumiNova ®* luminescent coating ensures exceptional legibility. The minute track, Arabic numerals and propeller hands retain the beige tone of the original model.
The black dial featuring a triangular marker has become a distinctive hallmark of classic pilot's watches. IWC designers placed this triangular marker below the “ 12 o'clock ” scale rather than integrating it into the minute track, which once again brings to mindthe original 1940 model.

The Big Pilot's Heritage Watch 48 is equipped with an eight-day power reserve movement; its internal 59215 manual-winding movement provides a generous power reserve of 192 hours, ensuring accurate timekeeping for eight days when fully wound, much to the delight of wearers. The remaining power can be easily read through a small power reserve aperture covered with sapphire crystal on the case back. In addition to the power reserve window, this pilot's watch is fitted with a soft-iron inner case that effectively protects the timepiece against magnetic fields. The Big Pilot's Heritage Watch 48 is likewise equipped with a slipping clutch to prevent over-winding.



The brown calfskin strap, designed with inspiration drawn from the leather straps of historical Big Pilot's watches, allows the timepiece to be worn easily even over bulky flight suits. The strap is divided into two sections stitched together at the ends, an ingenious design that prevents the watch from slipping off accidentally,securing the watch firmly to the wrist.
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