This fan comes fitted with a rechargeable 1200mAh lithium battery which can be charged using the USB included. This allows approx. 10 hours wireless working time allowing you to use the fan on the go. Adjust appropriate fan speed by pressing the power button repeatedly for 3 different fan speed settings. Mini portable sized handheld fan which fits easily in your handbag, glove box, car, office draw with its palm-size. Suitable for both adults and children, fingers cannot put into the screen. Compatible with all USB output device and comes with the USB charging cable which works with and could be recharged by 5V output adapter, USB charger, laptop, power bank and other USB-enabled devices. Powerful strong wind handheld fan which also has low noise. Ideal to use everywhere, when in office, at home, in bed, indoor & outdoors.