D2-6 Bluetooth Remote Control Car Kit: This intelligent car kit is designed for electronics enthusiasts, students, and manufacturers who learn and practice embedded development, robot control, and welding skills. Bluetooth remote control: supports control through a mobile phone or compatible Bluetooth controller, and can perform forward, backward, left, right, and stop operations with high responsiveness. Gravity sensing tracking: Built in sensors enable cars to travel along preset paths or black lines on the ground, making it an ideal choice for learning sensor principles and control algorithms. Obstacle avoidance function: equipped with distance detection sensors to automatically detect and avoid obstacles, improve safety, and demonstrate basic autonomous driving logic. C51 microcontroller platform: using the classic C51 microcontroller as the control core, suitable for beginners to learn C programming, I/O control, and peripheral interfaces. Color: As Shown Material: PCB Package Contents: 1 * Bluetooth car Set Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.