OPOLAR F401 Mini USB Table Desk Personal Fan (Metal Design, Quiet Operation 3.9' USB Cable, High Compatibility), 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 1 Year replacement for product defect and live customer care 7 days a week provided by opolar