Material: ABS Suitable for USB port of notebooks and ordinary computers AA batteries or USB power supply On top, there is LED colorful electric light, powered by AA batteries Procedure: When you put distilled water in the transparent vessel, put the white and red plastic bead Turn on the switch at the bottom, bead will be shot up from the volcano in bottom to top like colorful magma shooting off from a volcano with LED light emitting Size: 10 x 10 x 15cm Packing: Quantity: 48 pieces Carton size: 66 x 45 x 35.5cm Net weight: 14.2kg Gross weight: 15.5kg