(1)18-N standard musical movement (2)More than 1000 tunes for your choice (3)Use for toys,dolls,music box,gift and so on. Material:alloy & plasticTunes:hundreds of tunes for your chioceUsage:toy , music box, gift and so on (1) 18-N standard musical movement.(2)In plastic case with flexible rotating shaft-used for dolls and music boxes.