Portable Bubble Machine Powered by USB/4 AA Batteries for Party

20 minutes of continuous operation means more fun with less interruption when refilling. Fully automatic endless bubbles, let your hands go! (Note: Use a professional bubble fluid (not included) to achieve the best foam performance.) Child friendly and safe: this bubble maker is made of non-toxic, high-quality ABS plastic, safe and environmentally friendly. The machine will no longer turn as soon as your finger touches the bubble sticks. After your finger has gone from sticks, bubble machine will turn again after 2 seconds. Easy to use and clean: simply pour some bubble solution into the bubble machine and turn on the power. This instantly creates a bubble wonderland. Pour away the bubble liquid and wipe it with a cloth. The bubble blower is easy to clean. Without complicated steps, children can easily operate the bubble machine toy.