With its Big Crown collection, Oris demonstrates its expertise in the field of watches that pay tribute to historical aircraft. Inspired by the Bell X-1, the first plane to break the sound barrier, the Big Crown X1 Calculator refers to the 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 that historical feat accomplished at 10:18 on October 14th 1947.
SPECIFICATIONS
CASE
Gunmetal grey PVD-coated stainless steel, 46 mm
Curved, double-sided anti-reflective sapphire crystal
Screw-in back with mineral crystal and m/ft scale
Rotating bezel with circular slide rule
Water-resistant to 30 m / 3 ATM
DIAL
Metallised black/grey
Superluminova-enhanced minute-circle, hour-markers and hands
12-hour, 30-minute and small seconds counters at 6, 12 and 9 o’clock respectively
Date window between 4 and 5 o’clock and day window at 9 o’clock
MOVEMENT
Automatic, ETA Valjoux 7750
FUNCTIONS
Hours, minutes, seconds, day, date, chronograph and slide rule
BRACELET/STRAP
Black calfskin leather
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