Mould King Mechanical Crane Building Sets Toy, Electric Crane Toy Building Kits with Remote Control & APP Control, Creative Engineering Vehicle Building Blocks for Adults Kids 14+ Product Feature: Challenging STEM Project: This crane toy contains 5539 block parts, all packaged in individual bags with detailed instructions, easy to understanding and building. At the same time, it contains two instruction books. It requires a lot of patience in the process of building, and requires some knowledge of electricity and machinery. It is a very challenging toy. Real 1:16 Crain Model: This building block toy is Mechanical Crane Model. It is equipped with 6 motors, adopts a mechanical remote control linkage device, so that the model can complete functions such as driving, remote control, and hanging like a real crane. Installed with 8 tires, this engineering model not only rides smoothly, but also can withstand huge pressure when hanging heavy objects APP Remote Control Fuction: The mechanical crane building sets use high-performance motor and smart chip, and support two Bluetooth remote control operation modes: handheld remote control and mobile phone app. Can achieve forward, backward, left and right turns, can move smoothly in all directions, whether on flat or rough ground. The boom of the crane can be raised up to 1 meter through the remote control of the mobile phone Environmental Friendly Materials: Made of ABS environmentally friendly and safe materials and natural toner raw materials, safe and harmless. The building block toys built have a solid structure and are close to reality. It can better protect children's safety when they enjoy building toy fun Gift for 14+ Teens and Adults: Cultivate player's hand-eye coordination ability and logical thinking ability, improve player's problem-solving ability and self-confidence, and maximize teenage's creativity, DIY hands-on ability and imagination. Wonderful collectible gifts for engineering vehicle lovers, remote control truck enthusiasts, fans and future engineers Product Specification: Product Dimensions: 28.4 x 8.5 x 8.86 inches Item Weight: 18.61 pounds You Get: 1 x Mould King Mechanical Crane Building Sets Toy Before you place an order, please provide me with English information to facilitate our delivery and logistics