Rechargeable Bubble Machine: Built-in rechargeable 1200mah battery, which only need to Type-C charging cable for charging, bid farewell to the mode of frequently replacing batteries Leakproof Design - Compared with traditional bubble machines, it features a fully enclosed design that prevents the bubble solution from leaking, solution won't spill onto the ground, minimizing the risk of your child slipping while chasing bubbles. Safe and Robbust Materials - Our bubble machine is made from high-quality, durable ABS material, featuring smooth edges without any burrs. Meets the US toy standards and has passed CPSIA and ASTM safety tests, making it a safe choice for your children, toddlers, and pets