<p>1. Using high-quality materials, the quality is guaranteed</p> <p>2. Ultrasonic distance measurement and obstacle avoidance, automatically rotate or back to avoid obstacles when encountering obstacles</p> <p>3. The digital tube displays the current obstacle distance in real time, up to 5 meters</p> <p>4. Introduce a simulation design concept to make the circuit board more like a car chassis, a dedicated motor drive chip, control the forward and reverse rotation of the motor, and flexibly control the car's forward, backward, in- rotation and other actions; the single-chip control system is closer to the people</p> <p>5. A wide range of applications, training hands-on ability</p> <p>The universal wheel version reduces the walking resistance of the car, saves power and lasts longer</p> <p>Working voltage: 5V</p> <p>Power supply mode: 4xAAA batteries (not included in the delivery)</p> <p>Working current: no-load less than 300mA (the motors are working but not walking)</p> <p>Due to different batches, there may be differences in product appearance, color, and printed text, which not affect the use.</p> <p>Colour:Yellow\u0026Black</p> <p>Material:plastic</p> <p>Package Contents:</p> <p>1 x DIY electronic kit</p> <p>Only the above package content, other products are not included.</p> <p>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.</p>