EASY DIY ASSEMBLE---- The product comes in kits package. You will need 2 minutes to assemble it success. No glue, no battery or no tool required. Take out the base, then insert the conversion plug of the lower part of the connecting rod on the base shaft; Finally, connect the fan blade on the shaft protruding from the fan box, and the solar windmill is completed. Gallery picture show you details.Also, there is a free tissue tape, you can use it to stick the windmill model on the table or car.