Diy handmade bubble machine student creative science experiment toy Product Name: Bubble Machine Brand: small hammer material: plastic Weight: 150g Size: 14*15*14CM (length, width and height) Power: 3 AA batteries (requires self-contained) Packing: PP bag packaging Features: - DIY design, help to develop logic think ability. - Helps to develop operating ability. - Small size and cute appearance. Note: The bubble machine is shipped in pieces and needs to be assembled by itself. Shipping list: 1 set of bubble machine kit