Build your own Internal Combustion Engine! The engine you're about to start building is a greatly simplified version of a real car engine. The model is designed to be fun to put together and to make it easier for you to understand how a full-size four-stroke car engine works. This box contains all the parts and tools you need to assemble the working model. It comes complete with its very own Haynes Manual giving you clear step-by-step instructions to guide you through the build process. All you need to provide is the time, two batteries and a little vegetable oil. The on/off controller also includes a sound chip which reproduces the noise of an engine starting, as the model begins to work. Requires 2 AA batteries (not included). Recommended for 1 or more players, ages 14 and up. Made in China. Package dimensions: 16.5 x 11.75 x 4.35 inches. Includes Over 100 parts to build an internal combustion engine model, including electric motor and illuminating spark plugs, instruction manual, step-by-step diagrams, tools. Requires 2 AA batteries (not included). Wipe clean with dry or damp cloth. WARNING: CHOKING HAZARD - Small parts. Not for children under 3 years of age. Choking hazard Imported Material & Care Plastic Spot clean only