This bubble machine it's such a hit in the backyard, my daughter loves chasing the bubbles. It pops out a lot of bubbles in seconds. She loves it so much! It has 10 bubble blowing wands so there were nonstop bubbles! I definitely recommend this machine. You need 4 AA batteries but unfortunately, they aren’t included. The sound is a bit loud but not super loud. This was a great buy for me and definitely recommend it. I can't wait to use it for her 2nd birthday party