Feature: 1. EXQUISITE WORKMANSHIP: All products are assembled into metal structure models. Main material is aluminum alloy with anodized surface treatment, which is corrosion resistant and wear resistant. 2. SIMULATION DESIGN: The engine structure is a true industrial structure. Using various tools to assemble parts, the installation procedures and methods basically meet the actual industrial requirements. 3. SKILL DEVELOPMENT: This series of products is mainly aimed at improving users' hands on ability and concentration, and cultivating the habit of rigor and brainstorming. 4. HANDS ON ASSEMBLY: This engine is designed based on the engine of for Ferrari cars. Products sent as kits. Customers need to assemble it themselves to learn skills. 5. IDEAL GIFT: This model is an ideal gift for your friends, or your family members, especially those who are interested in cars, engines, or those office workers, the model is an ideal desk and shelf decoration. Specification: Item Type: Engine Model Assembly Kit Product Mode: DM 13 Main Materials: Anodized Aluminum Oxide, Stainless Steel Process: Anodizing Installation manual with colored graphics and text Charging Voltage: DC 5V Power Supply: With supporting polymer lithium battery capacity of 450 mAh (shipped with supporting battery). Package List: 413 x Accessory 2 x Small Storage Box 1 x Manual 1 x Supporting Battery 1 x Large Storage Box