1.Ultra Quiet The Blades design of this small desk fan has been upgraded with new technology and high quality ABS. So our table fan advanced the sound 25% quieter than others. The min noise is close to 25db, and the max noise is under 50db. It is suitable for you to use in working and studying. 2.180 Vertical Rotation The stand of this desktop fan can be rotated 180to adjust the wind angles which you need. It allows cooling at various angles and improving airflow in small rooms. The portable fan is in classic look and good quality. It can give you the better tactile feeling and prolong the use of the fan. 3.3 Speeds Strong Airflow There are 3 kinds of airflow can be adjusted by pressing the button. 4.Dual Power Supply You can plug it into the power supply for the lasting working or use the battery for the portable working. The light indicator is red when in charging , it will turns green when fully charged. 5.Portable The personal fan is with compact sizeand weight . Small and lightweight portable fan is easy to carry. And it is perfect for home, bedroom, office, desk, beach, camping or anywhere you need to make your day cool.