Built-in all-copper high-power motor supports high-speed blade rotation to generate strong wind, with hydromechanical cover enhancing wind force for long-distance wind feeling. 2 adjustable speeds to meet different needs: press power button once for low speed (3500r/min), press again for high speed (4000r/min). USB rechargeable with upgraded rechargeable polymer lithium battery, supporting longer runtime than ordinary same-capacity lithium batteries; comes with USB cable compatible with computer, power bank, common socket. Small and handy size: 12.6*7.9*2.1cm/4.9*3.1*0.8in, can be put in pocket or bag for easy carrying all summer, suitable as a fashionable gift for girls, boys, men, women and children. Multi-purpose for indoor and outdoor use: generates natural wind to keep cool during reading, exercising, queuing and traveling, the best companion in hot summer. Color: as shown in the picture.