Just pour gazillion bubbles solution in the reservoir, then press the button to chase the stream of bubbles, includes 4 oz. Bottle of Gazillion Bubbles solution. Blows bubbles on the go; Chase the stream of bubbles on robot machine. For outdoor use only. Size H19.81, W18.73, D15.24cm. Weight 0.63kg. For ages 3 years and over. Batteries required: 4 x AAA (not included) plus . WARNING(S): Not suitable for children under 3 years old. Only for domestic use. To be used under the direct supervision of an adult. Only to be used in water where the child is within its depth and under adult supervision.