The HUB6311 is a manual-wind calibre produced for use in replica Hublot Big Bang references, designated as "tourbillon inspired" — a term indicating that the movement incorporates a visible rotating cage assembly that replicates the appearance of a tourbillon without the underlying escapement correction mechanism that defines a functional tourbillon. A genuine tourbillon mounts the escapement and balance wheel inside a rotating cage to counteract positional gravity errors over time; the HUB6311's rotating assembly provides the visual effect of that rotation without correcting for positional rate deviation. The movement is wound manually — there is no rotor, and the watch requires hand-winding to maintain power reserve.
In replica watches, the HUB6311 is specified for Big Bang references where the open-dial tourbillon window is a required visual element — particularly models where the skeletonised dial makes the movement architecture the centrepiece of the design. Because the movement is manually wound, it requires periodic winding by the wearer rather than relying on wrist motion. The "inspired" designation is accurate disclosure: the rotating cage tracks visually with a genuine tourbillon in appearance and cadence, but its mechanical function is decorative rather than horological.
In Practice
- The HUB6311 is a manual-wind calibre — there is no automatic winding rotor. The watch must be wound by hand via the crown to maintain running power reserve. This is standard for tourbillon-style references where an exposed rotor would obstruct the movement display.
- The rotating cage assembly visible through the dial aperture mimics the rotation cadence of a genuine tourbillon — completing one revolution per minute — but does not house the escapement or balance wheel. The escapement operates independently, fixed in the movement plate rather than mounted inside the rotating cage.
- Because the escapement is not inside the cage, the HUB6311 does not provide positional accuracy correction. Rate performance is comparable to a standard manual-wind calibre — the tourbillon cage contributes no timekeeping function, only visual animation.
- The HUB6311 is specified for skeletonised Big Bang dials where the movement architecture is visible. It is not a general-purpose calibre used across reference types — its specification is tied directly to open-dial tourbillon window references where the rotating assembly must be present as a design element.
- For replica references requiring a visible tourbillon-style complication with quartz accuracy and no winding requirement, the HUB9005 (quartz tourbillon) is the appropriate alternative. The HUB6311 is the manual-wind option within the same visual category.
Related Terms
HUB9005 Inspired · HUB9009 Inspired · Tourbillon Inspired · Manual Wind · Skeleton Dial
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For a full overview of movements used in replica watches — including how manual-wind calibres compare to automatic and quartz options — read: Replica Watch Movements Explained