DTVTECH&reg; Portable Flexible Neck LED Light Table Desk Reading Lamp with clip /touch Sensor 3-Level Adjustable Brightness book Light /Rechargeable Lithium battery /Energy Saving USB Charge LED Desk Lamp 3-levels Adjustable different brightness can meet various demands of different environments. Free Twisted Tube and Environment Friendly Quality Energy Saving and built in Rechargeable Li-Battery provide Cycle Charge LED Lighting Power from USB Port Directl Modern Design and Portable everywhere