Features    <br>
Designed with 4 blades<br>
Three wind speed modes<br>
Charge via the attatched USB cable<br>
Built-in Li-on battery, can work continuously up to 10 hours <br>
Perfect for home and office use<br>
Lightweight and compact size, convenient to use    <br>
General Specs    <br>
Brand &amp; Model    DreamTree WV-361    <br>
Input    DC5V 0.5-1A    <br>
Output    DC2-7V 0.6-4W    <br>
Battery    Built-in 18650 Li-on battery    <br>
Dimension    160 x 112 x 48 mm    <br>
                                                                                    Package Details                                                                                        Weight:                                337.05                                g                                                        <br>
                                                            Size:                                18.5*12.5*6.5                                cm                                                        <br>