Product information:. 100% brand new and high quality. Power socket: USB 5V and shifter (generally, the current of mobile phone USB interface should be less than 500MA). Parameters: 5V/500MA. Power: 2.5W. Battery: 1.5V, 3 AA batteries.. How to use: Use 3*AA batteries or USB.. Material: ABS. External Dimensions: 115mm x 110mm x 135mm / 4.49" x 4.29" x 5.27" (approx.). Color: blue. Packing list:. Fan + plug + 3 AA batteries + USB plug wire*1