battery air conditioning
1.Small fan cools air up to 30F
2.Runs on battery
3.USB mini fan

1.Hand-held air condition fan
2.Small fan cools air up to 30F  

3.Runs on battery or usb cable
4.Put the soaked sponge into the cooler body, insert batteries or connect USB port,and it begins to work.

5.Support the battery and power.