This fan is considered to be a mini portable stylish desk fan. The USB charging desk fan is very convenient to use and carry. Also, this is adopted by maintaining international standards of 18650 3.7V/2200mAh high-capacity lithium battery which provides super long using time and strong power output. Moreover, the power consumption is very low and energy saving too. The max power is 4W. On the other hand, this is made of premium ABS material which is very durable. Long lifespan up to 10000 hours.