High Compatibility USB-powered - Gaiatop small desk fans, powered by USB to save energy and are compatible with PC/laptops, mobile power supplies, AC adapters, car chargers, and other power supplies that support USB. Adjustable Wind - We have taken into account your various needs, the fan head can rotate vertically from 0 to 30 degrees, providing the most suitable angle wind to quickly cool you down. Three-Speeds Setting - Low/medium/high-speed setting. Press the power button repeatedly to adjust the appropriate fan speed. The third gear with variable speed design provides you with more choices in different temperature environments. Quiet Operation -The fan is very strong and the noise is less than 50dB even when a strong wind is provided. At work and rest, this is a good friend who is quiet and comfortable for you. Classic Design & Small Size - Classic design and more compact, less than 8 ounces, take up small space. It is very suitable for home, car, office, outside or traveling.