Description :  Portable Rechargeable USB Mini Home Cooling Fan 4 Inches for PC Desktop Notebook Laptop   This USB Mini Cooling Fan powered by USB or 18650 rechargable battery. It is creative and convenient mini fan for you in this summer、 it got 3 modes for option、 and can produce 2 modes light for your night using.  With it around you it will help you stay cool and help you a lot :)   Features :  Powered by MICRO USB、 AC adapter or charged battery. (Includes for you)  Portable and Tiny、 can carry it around you and place it on desktop. Three speed mode optional、 and have a mini LED torch lighting + Fan decorative lighting. Really cool in the night !~  Brushless motor、 produce gentle、 quiet、 cool breeze、 suitable for traveling、 working、 studying、 drawing ect. A perfect helper to stay cool、 a decent gift for your friends、 your best partners in summer :)   Specification :  Power Supply : USB \/ AC adapter \/ 18650 Battery Output Voltage : DC 5V Output Power : 4.5W Charging Time : 4 - 5 hours Charging Voltage : DC 5V Battery Voltage : 3.7V Battery Type : lithium 18650 battery capacity 2200mA Size : 12.4cm x 4.4cm x 14.8cm \/ 4.8inch x 1.7inch x 5.8inch Three Speed Modes :               Gear         Speed(RPM)         Working Time(Hour)         Power(W)         Current(mA)               1         2200         2         1.08         200               2         2500         4         1.86         300               3         3100         8         3.76         400        Package includeds :  1 x Mini Rechargeable USB Fan 1 x 18650 Rechargeable Battery 1 x  USB Cable