... fan. 2 Super mini usb powered notebook laptop cooling fan. 3 Long time no heat, ultra-quiet. Super mini usb powered notebook laptop cooling fan. Name: mini fan ... 23cm * 12cm fan diameter 12cmFunction: USB battery 2, 3, 5 batteries, wind, ... household outdoor emergency, safety, fashion!Note: please take out the battery when not Super mini usb powered notebook laptop cooling fan ...