OPOLAR Mini USB Fan (Personal Desktop Fan, Metal Design; 3.9 feet USB Cable, Quiet Operation - Black) Perfect fan for the office, home, dorm, study, library, games room The sturdy metal fan produces a soft breeze to keep you cool and relaxed Powered by a 3.9 ft USB cable - compatible with computers, laptops, portable chargers and other devices with USB output 4 inch blade and 6 inch frame saves your desk space; adjust the direction of the wind with 360 degree up and down adjustment 1 year replacement for product defect and live customer care 7 days a week provided by OPOLAR