Harry Winston Opus 3 caliber

The Opus 3 caliber is a manual-winding movement produced by Harry Winston in collaboration with Vianney Hauter. It features 53 jewels, two independent gear trains, and twin spring barrels. The standout feature is a disk-based display system with ten rotating discs showing hours, minutes, seconds, and date—including jump hour and countdown-to-minute functions. The movement has a horizontal notched crown with four setting positions and was launched in 2003 in limited production.