Features    <br>
Designed with five blades<br>
Three wind speed modes<br>
Charge via the attatched USB cable<br>
Perfect for home and office use<br>
Lightweight and compact size, convenient to use    <br>
General Specs    <br>
Brand &amp; Model    Y-FAN    <br>
Input    DC5V    <br>
Output    DC5-6V    <br>
Input current    0.5A    <br>
Output power    3.5W    <br>
Battery    3.7V 18650 Li-on battery (not included)    <br>
Wind force    &gt;3m/s (From the fan 1 meter)    <br>
Working time    Third level: 6 hours; Second level: 3.5 hour; First level: 2 hours    <br>
                                                                                    Package Details                                                                                        Weight:                                253.59                                g                                                        <br>
                                                            Size:                                16.5*12.5*4.5                                cm                                                        <br>