Hours of fun with this crafting kit. Make your own Synth as you create your own music! Everything you need to create a desktop synthesiser. Fold and stick the cleverly designed card nets together and pin in all of the electrical components. Once complete youll be able to create your own unique sounds. Includes card body, electrical components, double sided tape & full instructions. 45 minute build time. Requires 3 AAA 1.5V batteries (not included).