ONEONEY Portable USB Desk Fan Mini Table Fan Black (Metal Design, Large Air Flow, Quiet Operation),(Green) Perfect fan for the office, home, dorm, study, library, games room 4 aluminum alloy blades provide more wind volumes than most 3 blades. 360?up and down adjustable direction makes the fan more flexible to meet your needs. 4 Inches blade and 6 inches portable frame save your desk space. Available in assorted colors to suit individual taste