Drawdio is an electronic pencil that lets you make music while you draw! This fun pack has all the fun without the soldering. Essentially, its a very simple musical synthesizer that uses the conductive properties of pencil graphite to create different sounds. The result is a fun toy that lets you draw musical instruments on any piece of paper. Runs on a single AAA battery for many hours (even 'nearly dead' batteries will work) Use pencils, brushes, people, fabric, anything you want to make noise. Ridiculously fun for all ages The assembled Drawdio pack contains: Assembled & tested Drawdio - no soldering required! Large brush Soft lead pencil + thumbtack 2 x Alligator clips 4 x Wire ties (the photo shows 2, but the kit has 4) 12" of copper tape 2 AAA batteries included!