Description: 【Innovative Design】: This DIY electronic Smart Robot Car Kit introduces a simulation design concept, making the circuit board resemble a car chassis. It features a dedicated motor driver chip for control of forward, backward, and place rotation movements 【Advanced Control System】: Equipped with an STC controller system, this smart robot kit offers user-friendly programming capabilities that are accessible to enthusiasts of all levels 【Quality Material】: Constructed from pp, ensuring longevity and resilience during assembly and control 【Compact Dimensions】: The smart car measures 12cmx7.3cm/4.72inchx2.87inch, making it an ideal size for educational projects and hobbyist experimentation 【Complete Set Package】: Comes as a full set of components needed for self-assembly, providing everything required to build your own ultrasonic obstacle-avoiding robot car from scratch Specification: Material: PP Size Chart: 12cmx7.3cm/4.72inchx2.87inch Package Includes: 1 Ultrasonic robot car Note: 1.This is not infant toy, please take away from children to avoid eating. 2.Please allow slightly errors due to manual measurement and different monitors.