Kit consists of wooden parts that are laser-cut and can be assembled. As soon as the motor is connected to the 9V battery, the plastic propeller begins to spin and creates a current of air which moves the vehicle forward. The vehicle rolls particularly well on smooth surfaces. Includes a 9V block battery and glue. Work required: glue, solder (also possible without soldering) and assemble. Dimensions are approx. 150 x 107 x 135mm