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With its Big Crown collection, Oris demonstrates expertise in the field of tribute watches to historical aircraft. Inspired by the Bell X-1, the first plane to break the sound barrier, the Big Crown X1 Calculator refers to this era when flight plans were still made using slide rules, and accentuates this unique mechanism. Its rotating bezel serves to adjust the slide rule and to calculate fuel consumption for a given flight time, while the caseback displays a m/ft conversion table for international use. The chronograph push-pieces bear the X and 1, like a last nod to the date of the historical feat accomplished at 10:18 on October 14th 1947

This exemplifies the future of aviation watches. The Oris BC4 Flight Timer shows its love for aviation even to the smallest details.The Oris BC4 Flight Timer contains all the information you may need, including the date at 6 o'clock. . It is designed with two piece black dial with printed pattern, applied nickel indices, and nickel hands with Super luminova inlay. The case is made of multi piece stainless steel secured with 7 screws. The points of the compass and degree headings that also marked the BC4 Flight Timer are a multifunctional marvel. Resembling everything Oris has made, the design follows function. The small second with its distinctive white markings at 9 o'clock shows the wearer that the watch is working it is also an instrument just as essential as any in a pilot's cockpit. The BC4 is also protected by the special Oris Quick Lock Crown system: safety first.The Oris BC4 Flight Timer gives importance to its function more than design. This watch will definitely get a high demand from the adventurous type of people.