The Duck will be sent to the top one by one and then slide back to the starting point for the next round. Climb The Stairs Automatically: There is a mechanism inside the main part of the toy that enables the stairs part to work like an escalator. The lovely ducklings will be sent to the top just like they are taking the escalator. Ending Point is Starting Point: With the escalator-like mechanism and the sliding tracks, these little Duck will back to the starting point automatically after sliding down. Therefore, it can keep working until you stop it. Music & Light Function: Dynamic music will sound and shining lights can be seen as the toy starts working, which makes the toy more fun and attracts kids' attention more easily. Great Gift for Kids: Nearly no babies can refuse such an interesting toy with creative function and lovely appearance. Kids can assemble it independently although assembly is required because there are only 3 tracks needed to connect.