Reobrix 6-Channel RC Engineering Crane Building Set, 2178PCS Building Set with 360 Rotating Robotic Arm & Linear Lift, STEM Construction Model for Adults & Teens 14+ Product Feature: [The first choice for engineering fans and manual enthusiasts - high simulation] Reobrix multifunctional crane blocks accurately reproduce the real crane structure, a total of 2178 pieces, including open and close the door, adjustable shelf baffle and hydraulic support bracket, details comparable to professional engineering vehicle models, to meet the child's desire to explore the mechanical structure, is the ideal enlightenment toys for the little engineers! [Intelligent Control - Technology Experience ] Support mobile APP bluetooth remote control + manual control dual mode, remote command crane forward / steering, real-time control arm lift and shelf tilt, cultivate children's programming thinking and hand-eye coordination, science and technology enthusiasts do not want to miss! [Dynamic function - real operation ] Unique power drive system, front wheel flexible steering with hydraulic support frame opening and closing, simulating the real crane construction scene, the arm free lifting and loading stability, let the children experience the site commander role-playing fun! [Parent-child interaction-creative building] Compatible with mainstream building blocks components, assembly process exercise logical thinking and patience, parents can accompany the child assembly and explain the mechanical principles, the door manually open and close the door and other designs to enhance the interactivity, is a quality choice for parents to give their children holiday gifts. [Collection Gift STEM Learning] Reobrix Multi-functional crane building blocks. Can be used as a birthday gift or a learning tool to stimulate children's potential, or an adult collection, this building block toy can meet the needs of different groups. It is not only a toy, but also an exquisite model for mechanical enthusiasts of all ages! Product Specification: Number of Pieces: 2178 Item Dimensions: 4.51 x 3 x 3 inches You Get: 1 x Reobrix 6-Channel RC Engineering Crane Building Set Before you place an order, please provide me with English information to facilitate our delivery and logistics