Is the automatic winding of Longines l899 bidirectional?

The automatic winding of Longines l899 is not bidirectional. According to the relevant public information, the l899 movement is specially developed by ETA for Longines. Its self-winding is unidirectional, with 48-hour power storage and rebound effect. That is, when the pointer reaches the end of the fan-shaped display panel, it will immediately jump in the opposite direction.