Abstract: Disclosed herein is a movable vertical displacement device used in multi-directional positioning synchronous-response for cover-activated vertical transfer action. The device comprises: a chassis frame for supporting a main body, a vertical displacement mechanism attached to said chassis frame, capable of rendering vertical transfer of said chassis frame, and a backing base attached to said vertical displacement mechanism. Implementation of this movable vertical displacement device enables the same piece of jewelry to be displayed by the wearer in two or more distinct styles, thereby allowing more choice, adding new ornamental dimension to the jewelry for the wearer, and making possible omni-directional synchronous preset-response vertical transfer action.