BUILD YOUR OWN ENGINE KIT – The Build Your Own Model Engine Kits from Machine Works make excellent gifts for vehicle and model enthusiasts who like creating and learning about mechanical systems and engineering. Requires 3 x AA Batteries (Not included) DIY KITS FOR ADULTS AND KIDS – This functional model of a V8 Internal Combustion Engine is the perfect activity for both children (over 10 years) and adults to build together. There is also a Special Augmented Reality App available to download via your Smartphone to provide animations and detailed descriptions of key features of the engine DISCOVER & LEARN AS YOU BUILD – This Engine is a simplified replica of a V8 Internal Combustion Engine and illustrates thye main operating principles and functions INCLUDES OVER 250 PARTS – This 250+ piece kit for kids and adults is enjoyable to construct and includes all of the tools you'll need to complete the operating model. The Fully illustrated step-by-step instructions guide you through every stage of the assembly process. Each component is clearly identified, and each function explained PRODUCT FEATURES - The transparent engine case of the finished model means the moving parts are clearly visible when it’s operating, allowing you to see the interaction of the crankshaft, pistons, and valves, as well as the illuminating spark plugs, Manufacturer: Trends UK Ltd