XJS Couples Mini Fan Dual Head Portable USB Rechargeable Personal Fan Quiet Operation Desktop Fan with LED Light-White CONVENIENT: Different ways to charge fan with lithium battery in, compatible with computers, laptops, portable chargers and other devices with USB output 2016 LATEST STYLE COUPLE FAN: 350 degree rotation, meet your need of different angles of the wind. Portable and easy to carry thanks to its lightweight and handle design HIGH EFFICIENT: Adopts two motors to provide you strong wind. 2.5 hours to be fully charged. Support about 5.5 hours at the high speed, 3.5 hours at the medium speed and 2 hours at the low speed MULTIFUNCTION: Indoor use when need instant cooling, perfect for the office, dorm, study, kitchen and bedroom, saving power when air condition is not so necessary. Especially perfect for outdoor activities and travel. It's also a better and quiet fan to care your baby ONE BUTTON DESIAN: Click the button, the fan will cyclic shift, each press will change a speed, the sequence is 1 speed - 2 speed - 3 speed - power off For opening left fan, quickly double-press the button; For opening right fan, second fast double-press the button while closeing the left fan