8-inch Fan with Quiet Operation: Although the fan is very strong, even in high speed the noise is less than 50dB.Quiet speeds to suit your preference without disrupting family, roommates, your work study or sleep. Ideal for your Desk Travel Office Ho Rechargeable Operated Fan: Rechargeable ( built in ), 2~6 hours working time depend on different speed. Comes with USB cable, the USB fan compatible with any device with USB port (laptop, desktop, power bank, socket, power outlet) to get charged. Usi Small Desk Fan for Table or Bedroom: This quiet fan is compact enough for on a table or floor enough to help provide comfortable cooling in small-medium rooms. And it’s wireless usb fans , you can place on it anywhere if you want . Such as Computer d