Oris Big Crown X1 Calculator

Description:

The Oris Big Crown X1 Calculator (reference 01 675 7648 4264-Set 5 23 77) pays homage to the first manned supersonic flight of 1947, blending vintage aviation heritage with genuine slide-rule functionality. Crafted from multi-piece stainless steel with a grey PVD-plated finish, its case offers a bold, substantial wrist presence. The black dial, featuring luminous Arabic numerals and index hour markers alongside three subsidiary dials for continuous seconds, a 30-minute counter and a 12-hour counter, is powered by the dependable calibre Oris 675 (a modification of the ETA 7750) automatic movement, offering robust chronograph accuracy with day and date display.

With its historically accurate rotating slide-rule bezel, domed sapphire crystal with double-sided anti-reflective coating, and a screwed see-through case-back with special engravings, this Big Crown X1 Calculator bridges Oris's aviation heritage with genuine engineering utility. Paired with a leather strap and grey PVD-plated pin buckle, this watch remains a versatile classic—equally at home as a tool watch or a standout in an aviation-themed collection.

This piece presents in excellent condition with box and papers.

Specifications: