The QiYi Gear Cube V2 modernises the classic interlocking-gear puzzle. Turning a layer drives a set of meshed cogs that rotate with it, creating the hypnotic mechanical motion that has made gear cubes a collector staple since the days of Oskar van Deventer's originals.

This V2 refines the formula with enlarged corners, softened curves and a compact spherical core, so the gears engage cleanly instead of grinding. A 57 mm frosted black body with bright tiles keeps the gearing clearly visible.

A must-have for fans of unusual mechanisms - no speedcubing required, just curiosity.

Features:

• Interlocking gear mechanism on every turn
• V2 refinement: larger corners, smoother curves
• 57 mm, about 86 g
• Black body with bright tiles