Kootek DL02 Portable Touch Control LED Desk Lamp Eye Care Rechargeable Dimmable Reading Light with Gooseneck and USB Charging Port, 3 Levels of Adjustable Brightness (White) 3 Levels of brightness through touch sensor switch. Non-flickering, no harsh to eyes, and zero-radiation. Flexible neck suitable for use in office, bedroom, school, and reading. Easily to compact position. With rechargeable lithium battery for up to 4 hours of continuous lighting. The thinnest LED desk lamp on the market, portable design that is equally at home indoors and out.