Features: -Material & Workmanship: Made of metal materials, CNC precision casting process, aluminum alloy oxidation, collection of crafts level of exquisite work. 249 parts were polished by professional abrasive tools, which perfectly interprets the wisdom of human creation and yearning for the great industrial age.  -Vision: the extreme presentation of mechanical mechanism, clear transmission process at a glance, fully display the logical, beauty of mechanical.  -Reduction Degree: Take the historical invention and product as the design prototype, present the core principle of machine operation, intuitively show the core value of machine. The inspiration comes from the representative node classic works in the history of human industrial science and technology. Scale model, highly reductive.  -Expansibility: Each product has its own independent function and structure, and at the same time, the product can upgrade, combine and transform the power system through the designated kit or DIY modification.  -Fun to Assemble: The original product requires the user to assemble the parts and components for the whole machine. The whole process is close to the professional assembly line technology, which needs more than 3 hours to complete the assembly. The difficulty level is 4.5 star, which is interesting and full of experience.  -Power: In order to make the product work easily without harming the product, use electric motor instead of traditional gasoline. Lithium battery capacity of 500MAH, under full power state, it works no less than 30 minutes.    Description: Item Name:Explorer 1 Model Car;  Weight: About 713g;  Material: Aluminium Alloy+Stainless Steel;  Quantity of Parts:249pcs;  Product Size: 20.8*12.35*10 CM;  Package Size:21.4*13*11.85 CM;  External Power Supply: DC 5V;  Lithium Battery Capacity:500MAH;  Charging Time:2 hrs;  Assembly Time:About 2.5 hrs;  Recommended Age:12+;    Packaga Included: 1 × Teching DM12B Explorer 1 Model Car