USB fan-- low-noise operation, can be placed on the table, provide you a good and cooling sleep.Desk fan-- this cooling fan is suitable for use in home, car, office, desktop, camping, travel and so on.High Compatibility USB-powered —  Big 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.Portable desktop fan-- made of plastic and iron material with stable performance and.Portable desk fan-- it is perfect for bedroom, living room, kitchen, office, dormitory, car, etc.Portable & Space Saving Table Fan: Big fan With 4 blade, metal frame, save the desktop space and compact for outdoors.