[HOW TO PLAY] 1. Crayons and pens etc. can be used normally, and the black color black line on white paper with Ho Ho Ho. 2. Keep your batteries after install phone, the bottom to turn on. 3. Your phone on top of the black lines on a flat surface. 4. Body of the black wire automatically on and off. [Set contents] 1. Main unit 2. LR Button Cell Batteries 3. 4 Black Ink Pens. Tested riding contact paper