1-16inch, good quality BUILT IN BATTERY 2*6V4.5Ah lead acid battery.
 4hrs in high speed. 6hrs in.low speed. 
It can be charged by both solar grid power or Ac power. 
2-fan with USB charging connector .used for charging mobile phone or radio
3-with bright LED light in 3 level. 
4-with REMOTE CONTROL
5. with 5 blades. colour can be customized.normal color:blue color and red color