Description: This intelligent new technology supports various projects, such as line tracking, object motion following, obstacle avoidance and gravity sensing control. Great for any skill level, whether youre a pro, enthusiast, or a beginner, assembling your new robotic car kit will help you learn to create circuits, program sensors and actuators and get hands-on programming, coding, electronics and robotics experience. Made of high quality high density fiberboard and plastic material, it's sturdy, environmentally friendly and durable. The length is 28cm, width is 18cn, height is 5cm. It's a perfect gift for your kids who are interested in programming, robotics, electronics, or mechanical design as it can improve logical thinking, mechanical, and electrical abilities of your kids and let your kids learn how to build and program fully-functional robots. Item Name: Smart Car Kit Material:Plastic,High Density Fiberboard Output Power: 6W Size:28cmx18cmx5cm/11.02inx7.09inx1.97in Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 X Ultrasonic Bracket 1 X Driver Board L298N 1 X Gimbal FPV 1 X Servo SG90 1 X Development Board UNO R3 12 X Nuts 1 X Assembly Drawing 1 X Rocker Switch 1 X Battery Box(Can Hold Four Batteries 4 X Casters 4 X Fasteners 2 X 20-line Sprayer Code Plates 2 X DC Gear Motors 2 X Wheels 1 X Car Chassis