E-joy Portable LED Desk Lamp Dimmable Reading Lamp Adjustable Goose Neck Lights with Touch Sensive Control Switch Study Night Light Flexible Lamp with Memory Function 360 degree adjustable gooseneck ,free twisted integrated flexible rubberized lamp-head tube allows you to position the lamp in anywhere you want. Portable design with built-in rechargeable battery. Recharged by any USB output ;Input Voltage: DC 5V/800mA , you can use your adapter/computer/power bank to charge it. Stepless touch-control to adjust brightness .Humanized design, you can adjust the brightness from low to high according to your different activities. With Memory Function ,come back to your personal choice brightness when you turn it on next time. Comfortable, flicker-free and ghost-free lighting for reading/work/study.