1. 15.24cm small desktop fan -BESKAR USB desktop fan has three speeds and 360-degree rotation adjustment, which can be cooled from different angles to improve the airflow in the small room. There are four rubber pads under the fan, which will not damage the desktop or slide. Perfect for putting on the table. 2. [Strong airflow, ultra-quiet]-USB desktop fan has built-in professional brushless motor, which makes the operation faster. Feel the strong airflow from 10 feet away. Unique turbine blade design, quiet 25%. The minimum noise of the fan is close to 20dB. It is powerful enough, cool breeze and quiet operation to provide you with a comfortable working environment. 3. [High compatibility USB power supply]-Small desktop fan is powered by USB, which is compatible with PC/laptop, mobile power supply, AC adapter, wall charger and other USB-supported power supplies. USB fan is energy-saving and environment-friendly. (Note: This fan has no battery) 4. "Compact portable USB fan"-6 x 5.6 x 3 inches (about 15.2x14.2x7.6cm), weighing 7 ounces (about 195.6g). Portable fan can be conveniently carried in a bag when going out or traveling, which is very suitable for offices, families, dormitories, camping, libraries and so on.