BATTERY & USB POWERED FAN - This 5-Inch portable fan from Treva runs on it's USB cord or 4 AA batteries, cool gadgets for an awesome office desk accessories COMPACT DESIGN: This mini fan won’t take up much space and features a convenient folding design, so you can use it as a window fan or travel fan to go with you TWO-SPEED OPERATION: To accommodate your needs, the box fan features high and low speeds. The cooling fan boasts a quiet operation on both settings so you can read or relax without any distractions. EASY TO USE: This personal fan runs on four AA batteries (not included). To install, slide out the battery door and insert batteries following (+/-) marks, then replace door. EMERGENCY/DISASTER PREPAREDNESS: Make sure you’re prepared with this table fan bedroom fan the next time a power outage occurs. You can stay cool and comfortable without electrical power