USB Fan, Daffodil UFN100B Mini Table Desk Personal Fan and Portable Metal Cooling Fan for Office Home School and Camping, High Compatibility, Power Saving with 360 Degree Rotation, 5.5 Inch (Black) QUIET:The USB fan contains a Brushless axial motor,all-metal and injury-prevention frame,Three Anti-vibration pads help to reduce noise further. It can be used without worrying about noise. HIGH QUALITY: Daffodil USB fan uses a powerful upgraded motor and four aluminum blades adjusted professional balance technology to enhance the airflow up to 3.0m/s.Metal frame and aluminum Fan Blade make the USB fan safe and reliable. 360 DEGREES ROTATION:The stand is completely adjustable with 360 degrees of rotation. You can enjoy the cooling and circulating effects from any direction. UNIVERSAL COMPATIBILITY: It can be used by inserting it in a personal computer, power bank, a USB charger or other devices with USB output. POWER SAVING:The USB fan consumes 2.5W power per hour and saves around 95% power than traditional AC fans.