Description: Voice Control Bus: After the bus is powered on, it is controlled by the voice control module. When the sound is detected, the car will run. If there is no sound, the car can stop automatically after a delay of about 10 secondsWooden Toys: Made of quality wood materials, strong and practical, great workmanship, smooth surface without burrs, rounded corners, care for baby's tender handsStylish Appearance: hidden motor, more concise appearance, exposed battery box, easy to replace the battery (powered by 2pcs AA battery, battery not included), the gear fits the axle sleeve to fix the axle, and the driving is more stableEasy to Assemble: Each set of science experiment toys has corresponding product instructions, detailed steps, clear and easy to understand, do not worry about assembly difficultiesEducational Toys: The great gift for children, exercise their hands on ability and hand eye coordination in the process of assembling toy cars, and let children experience the fun of DIY Specification: Material: Wood Size Chart: 11cmx5cmx6cm/4.33inchx1.97inchx2.36inch Package Includes: 1 Pieces Wooden Voice Control Bus Toy Car Note: 1. This is not infant toy , please take away from kids to avoid eating.2. Please allow slightly error due to manual measurement.3. Due to the difference between different monitors, the picture may not reflect the actual color of the item.4. Wish you a wonderful on-line shopping!