LED Desk Lamp, Lemontec LED Table Lamp Eye-caring LED Lamp (12W, Dimmable, Touch Control, 5 Color Modes, USB Charging Port) 4 lighting modes, 5 level brightness. Adjustable brightness, with perfect simulation of natural light. The model has four light setting for optimal use. Natural light protects eyes, 1 hour auto-off High Performance LED light bulb -- 25 Years Under Normal Use LED light bulb -- 25 Years Under Normal Use 12 V low voltage DC power supply, designed for low energy use for up to 90% power saving effciency when compared against incandescent lamps.