Three-speed strong wind level: The USB portable fan has 3 adjustable speed modes (light wind, natural wind and strong wind) You can adjust the power button to get the wind speed you need . Ultra quiet performance: 5 optimized lightweight fan blades produce strong and steady airflow and effectively reduce wind resistance and noise. Safe to use: Widened frame design can effectively prevent your fingers from entering the fan. To prevent the blade from accidentally hurting your fingers when rotating, it is also suitable for children, USB table fan is an effective and reliable partner. A cool summer: Portable Quiet USB fan can keep you cool, very suitable for offices, homes, dorms, study rooms, libraries, takes up little space and is easy to store. Note: The data is all measured manually, please allow 1-3cm error, due to the difference in light and display, there will be a certain color difference, the actual object received shall prevail.