about this project Rotating Bubble Maker for KidsThe bubble toy is an automatic bubble maker with 90 and 360 rotation modes, the electric bubble maker is made of lightweight, durable and non-toxic ABS plastic, very safe for children. Bubbles for Toddlers Ages 1-3 Enjoy the amazing bubble machine outdoors, backyard, lawn, park, beach or camping Large Capacity, LeakproofThe bubble machine is built into a larger bubble tank of 500ML (50ml bubble concentrate and 450ml water), which can produce 4000+ colorful bubbles in 1 minute. The water tank is airtight to keep soap bubbles from leaking out, and the wireless bubble machine kids can run and spin with it. (Free 2 packs of 50ml bubble essence) Portable Rechargeable BatteryOur bubble blower adopts Type-C charging interface, which can be fully charged within 3-5 hours and can work up to 5 hours. With a visible water line, you can see how much bubble solution is left for your utmost convenience. [Safe and unique appearance] Simple and elegant design, 45 angle bubble outlet, let the bubbles fly higher and farther. Soft orange handle, don't worry about children being scratched by the plastic. So this is definitely the best bubble maker for toddlers ages 3 4 5+.