A challenging solar powered robot with gearbox and battery, to build and wire. Once correctly assembled the Lunar Car stride along a flat surface. Tricky but worth it! * Push-out pre-cut balsa wood pieces. * Learn how a solar module can power a gearbox. * Learn how to build a gearbox and how automatic transmissions and motors work. * Make a simple wiring circuit with solar panel, battery, motor and switch. * Use a slide switch to select battery or sun powered operation. * Illustrated instructions included. * Requires screwdriver, long nose pliers, sharp knife, sandpaper and AA battery. * Contains over 100 parts to put together. * Not suitable for under 3s due to small parts. * Adult help needed.