GiftU corporate gift search enginee, provides customised promotion handly fan gift ideas, welcome small orders, professional solution, quality guaranteed 

Port Micro USB
Input voltage :DC5V 
Battery:(2000mAh)
Charging time: About 3 - 4 hours 
Using time: About 6 - 8 hours
Features  High Quality and  easy to carry 
Design and mike it more airflow and higher efficiency.compact size makes the fan very portable.
Easily pack it with your bag and take it with you when you are doing.