BATTERY POWER FAN - This 5-Inch portable fan from Treva runs on 2 D batteries (not included), cool gadgets for an awesome office desk accessories or floor fan for your summer cooling 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 -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 DD batteries (not included). To install, slide out the battery door and insert batteries following (+/-) marks, then replace door. /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