1. High-quality materials ensure durability. 2. Ultrasonic distance measurement with obstacle avoidance; automatically rotates or reverses to avoid obstacles. 3. Digital display shows real-time obstacle distance up to 5 meters. 4. Innovative design with motor control for forward, reverse, and rotation movements. 5. Ideal for hands-on learning and skill development. **Specifications:** - Working voltage: 5V - Power supply: 4 x AAA batteries (not included) - Working current: <300mA (no-load) - Color: Yellow & Black - Material: Plastic **Package includes:** 1 x DIY electronic kit **Note:** - Product appearance may vary slightly by batch. - Colors may differ slightly due to lighting and display settings. - Measurement tolerance: +/- 1-3cm.