Features: à - powered by usb power plug- it can be connected to different power sources via usb, and you can purchase a usb adapter for direct charging. - it can also be powered by solar panels- ultra-quiet design- 360ð anglefortable, easy to use, suitable for all seasons- usb fan for laptops and desktops- with a solar folding bag charger, can be used to outdoors/daily office/home/outdoor usespecifications: à 1. Name: usb fan + solar folding bag charger2. Working voltage: 5.5v3. Working current: 0-900ma4. Power: 5w5. Size about cooling fan: 6inches6. Wafer: monocrystalline silicon7. Output: usb interfaceà package include: à 1 x cooling fan1 x solar folding bag charger