Usb Desk Fan, 5.5 Inch Small Quiet Powerful 3 Speeds 90degree(s) Rotate, Personal Mini Portable Desktop Table Fans, Cooling for Home Office Car Travel.... Powerful and Super Quiet: The usb desk fan comes with a upgraded motor, makes wind stronger and noise lower Max wind speed reachs 5.3 m/s, 30-50 db noise level A great personal fan for sleeping and working (Please powered by a 5 V / 2 A power supply) 3 Speed Airflow: The portable fan has 3 modes to get the air flow exactly how you want it: Low, Medium and High High speed is powerful, moves a lot of air, and cools you off quickly Low speed creates gental breeze Great travel essentials for summer Detachable Cover and Stable Base: The table fan cover can be easily removed for cleaning Silicone pads are designed at the 4 positions of the base for better anti-skid effect, so the small fan will not crawl on the desktop or tip itself over