usb mini fan:
1)Current:450-550ma
2)Voltage:DC 5V
3)power:2.8W
4)speeds:one speed,low-carbon

usb mini fan:
1)Current:450-550mA
2)Voltage:DC 5V
3)power:2.8W
4)speeds:one speed,Efficiently economize on energy
5) USB fan for PC/ laptop/desktop 
6) Power supply by USB . 
7) Low noise & low heat operation.