Feature: 1. How to Use: sound power from the spring, use the key to tighten the spring, then release and start playing, the movement lever on the movement will follow the music together 2. Relaxing and Interesting: Music box movement is a therapeutic function for children and adults, watching the small gears move will make you feel relaxed 3. DIY: You can install the music movement into DIY boxes, such as paper boxes, wooden boxes, glass boxes, plastic boxes and metal boxes, etc 4. Alloy Material: Music box parts is made of alloy material, which is wearable and durable, and can be used with confidence 5. Scope of Application: A meaningful gift for yourself and your friends. Or you don't need to put the music movement in the box, just put it on the table and play the music movement Specification: Item Type: Music Box Movement Product Material: Alloy Product Use: Suitable for Rotating Music Box Production, Gift Making, Etc.. Package List: 1 x Music Box Movement Note: The movement starts by turning the bottom winding