FAN

You can use a fan by adjusting
the speed in two steps. You can
use about 28 hours of weak
winds and 18 hours of strong.

LIGHT

You can use your portable
light with two button clicks. 
22 hours of continuous
use is possible.

BATTERY

It is embarrassing that the
battery is exhausted and the
cell phone is turned off.
This is a very useful function.

COMPACT

Do not think that the size is
big because there are many
useful functions. It will be compact and easy to carry.