Feature: 1. FAMILY TIME: More than 450 components (mostly made of premium aluminum)! This kit will take you approximately 3 hours to assemble. Choose this kit and share hours of happy moments with your family. 2. EDUCATIONAL MODEL: This assembly kit perfectly demonstrates how each component of a 4 cylinder diesel engine is connected together and how they interact with each other. Display the basic principles of a four cylinder diesel engine. A science project that is perfect for your child. 3. EXQUISITE DECORATION: This is an artwork you built from scratch. Put it in your office, it will be a great start to the conversation. The unique design and beautiful workmanship make this model an excellent decoration for your desk or shelf. 4. MULTI USE: Engine model assembly kit has a wide range of applications, such as children's science projects, holiday gifts, physical machine learning tools, teacher demonstration props in the classroom, etc. 5. IDEAL GIFT: This model is an ideal gift for your friends, or your family members, especially those who are interested in cars, engines, etc. Specification: Item Type: Engine Motor Model Educational Toy Mode: DM115 Material: Anodized Aluminum Oxide, Stainless Steel Charging Voltage: DC 5V Power Supply: With a supporting lithium battery capacity of 450mah (shipped with supporting batteries) Assembly manual with colored graphics and text. Package List: 446 x Accessory 1 x Manual 2 x Storage Box 1 x Supporting Battery