USB Desk Fan 4 Inch Portable Ultra-Quiet Mini Fan 360 Up and Down Three-Speed Wind Suitable for Office Family (Blue)122*122*35mmPortable mini fan USB powered and 3-speed settings it can be powered by computers adapters and other devices with USB interface three adjustable wind speeds low medium and high you can choose your favorite wind speed.This mini fan is an ultra-quiet fan ideal for use in quiet environments such as offices homes libraries dormitories etc. You will only feel the cool breeze and will not hear the noise.360 rotation you can tilt it to your satisfaction angle with two non-slip bases on the bottom you can put the fan firmly on the table don t worry that it will fall down.If you have any questions or are not satisfied with the product after purchasing the product please contact us we will reply you within 24 hours to help you.