ECVILLA Mini USB Desk Fan - Black High QualityThe sturdy all-metal and injury-prevention frame,The fan produces a soft breeze to keep you cool and relaxed. QuietnessAdopting brushless motor can reduce noise to 40db. Except for a slight whirring sound that you can barely hear. Universal CompatibilityThe USB fan works from computer, laptop, power bank, USB outlet or power adapter. MultipurposePerfect fan for the office, home, dorm, study, library, games room, etc. What You Get12-Month warranty, just shop with your confidence. ECVILLA Fan circulates the air, maintaining a fresh, cooling breeze and reducing humidity level. Our fan can also help ventilate area and remove dangerous gases and fumes. It can function as a desk fan or a personal fan, adapting to your need. The frame of this personal table fan can be adjusted upward or downward. You can enjoy the wind that comes from different directions.