The Portable Fan Is Adequate For Your Various Cooling Demand, Just Press The Power Button To Change The Speed, It Will Always Keep You Cool At The Low Speed, The High Speed Is Strong Enough To Cool You Down Quickly After Heavy Sweat. comes With The Usb Cable That Compatible With All Usb Port, Such As Computer, Power Bank, Wall Chargers And Any Other Usb-enabled Power Supply, You Can Simply Plug It Into The Power Supply For The Whole Day Or Night Working. designer Four Rubbers On The Bottom Of The Pedestal Help Reduce Vibration And Increase Friction, Which Keep The Fan Firmly In Place To Ensure Airflow Is Being Directed To The Desired Location And Doesn't Slip Over When Working Even At The High Speed. size: 16*16cm color: Dark Blue material: Abs package Contents: 1* Fan 1* Usb Data Line Attention:1. Due to manual measurement, please allow for a slight error. Please make sure you don't mind before bidding.2. Colors may vary depending on the monitor, please understand. Attention:Hello, please pay attention to your shipping address when purchasing products. If your shipping information (such as name, street, house number, doorbell/email without name, etc.) is incorrect, the order will not be delivered correctly