Mr. Bubbles fire truck makes oodles of bubbles with bump and go action! This bubble Maker and blower encourages active play, promotes visual tracking, teaches cause and effect, & object permanence. He has been switch adapted to accept any standard 3.5 mm switch (not included). So, he can be used by pressing the button on the top of the truck, or by pressing and holding an external switch. Bubble solution is included (4 fl. Oz.) and you can refill with your choice of bubble solution. Dimensions: 8. 5 x 5 x 5 inches. 4 AAA batteries required, not included. SMALL PARTS WARNING: Not recommended for children under the age of 3 due to potential small parts choking hazard.