The Hublot Big Bang Meca-10 Black Magic is the manual-winding watch that wears its 10-day power reserve on the dial. Calibre HUB6033, 45mm black ceramic, skeletonised architecture showing the barrel gear train that stores the energy across 14,400 half-turns of the crown. The power reserve indicator at 9 o'clock counts down from 10 days. This is a watch that makes visible the relationship between effort and time. Full original documentation.