efluky 3 Speeds Mini USB Fan, Rechargeable Battery Fan with LED Light and 2200mAh Battery, Portable Fan Quiet for Office, Travel, Camping Fan, 4.5-Inch, White Three-speed design provides you more choices in different temperature environment. The built-in blue light and the side emergency light can be very useful after you turn off the lights in the night or when you are camping in the summer. The charging cable is the same as Android phone USB cable. You can use or charge the fan with your smartphone charger or plug into your computer USB interface. Multi-usage scenarioYou can use this in your office or at home with the power from computers. You can also bring this portable fan for travelling in summer to help you cool down when it is hot outside. Come with a 30-day money back and a 12-month limited seller's guarantee against manufacturer defects from date of purchase, and 24 hours' friendly customer service!