Qooltek LED Desk Lamp Clip on Light Book Reading Lights with 3 Lighting Model 10-Level Dimming for Bed Headboard,Table,Task Lighting [3 Lights Match Your Purpose]Choose between 3 color lights with 10 custom levels of brightness for study, reading in bed, keyboard lighting, or relaxing. [Energy Saving LED lighting]: LED Lamp use about 75% less energy than traditional incandescent , saving money and lower your power bills with cost effective. [Eye Protection]: LED light source non flickering,no glare,no ultraviolet ray, no frequency radiation,protect your eye from hurt. [Flexible & 2M USB cable]: The 360 rotatable neck allows you to easily adjust the light to perfect angles. There is a tiny blue indicator light on the switch in a 2M(6.56ft) USB cable, which makes sure you can find the switch in the darkness quickly. [Memory Function ]:Lamp automatically remembers the brightness and mode of the last use for your convenience. Package include: 1 x Light with USB cable, 1 x User Manual.