The 4M Green Science Dynamo Torch teaches young minds the value of green energy in an illuminating way. The Green Science Dynamo Torch turns a simple toy motor into a generator that transforms hand motion into electrical energy and powers a light bulb. This kit includes a toy motor, gears, LED light bulb and plastic casing. No additional parts or materials required. This kit is ideal for young science enthusiasts, and offers a valuable lesson on the transformative power of green science. Detailed assembly instructions included. No batteries required.