Lelife Reading Light Clip On Light With Dimmer,Touch Control,Perfect Reading Lamp Clamp On Light For Clip On Headboard,White Color Screw clamp, by this ingenious mechanism,with a simple twist,it is easy even for a 4 years old child to adjust the clamp Screw clamp clips securely onto desk, headboard,much better than spring clamp, no need to worry about the clamp fall off from your headboard anymore Brightness from 0~100% continually,you can always find the prefered brightness level. You could use this as a night light at the lowest brighness level,it is very dim Smart Touch sensor,touch once to turn on and off, touch and hold on for 2 seconds to adjust the brightness. Smart memory function, remembers the last light setting when restarts Flexible arm,easy to bend to your prefered angle,perfect bedside reading lamp. Packing including: 1xpower adapter,1x lamp, 1 year warranty