Feature 1、Metal structure assembly model, the main material is aluminum alloy with anodized surface. 2、The installation steps and methods of the steam car assembled by various tools and parts basically meet the actual industrial requirements. 3、Can improve the user's practical ability and concentration, and understand various industrial machines, and study various industrial structures. 4、Composed of 350 parts, the entire assembly process takes about 4 hours. When assembling, you will understand the working structure of the car. 5、Not only can you assemble it yourself, the exquisite packaging is also a gift for children, suitable for people over 14 years old. Item Type: TECHING Steam Engine Car Assembly Kit Product Model: DM234-A Material: Aluminum alloy + stainless steel Process: Anodizing Product Size: Approx. 245 x 107 x 134mm / 9.6 x 4.2 x 5.3in Number of Parts: 350pcs Lithium Battery Capacity: 3.7V, 450mAh Charging Time: 2 hours Working Time: More than 1 hour Assembly Time: About 4 hours Difficulty of Assembly: Level Ⅲ Suitable Age: 14 years old and above Package List 1 x Steam Engine Car Assembly Kit(350pcs) Note Please kindly note that this product needs to be assembled by yourself.Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.