【Strong Airflow & Ultra Quiet】The USB desk fans built-in professional brushless motor with faster operating speed. Feel the blast of the strong airflow from 10 ft away. Unique turbo blade design engineered to be 25% Quieter. The minimum noise of fan is close to 35dB. It's powerful enough for a cool breeze and quiet operating, gives you a comfortable work environment. 【High Compatibility USB-powered 】- The small desk fan is powered by USB and compatible with PC/laptop, power bank, AC adapter, wall charger and other USB-enabled power supply.USB fan is energy-saving and environmentally friendly.