OxyLED T120 Dimmable Eye-care LED Desk Lamp with Cool & Warm Color Light Non-Flicking, No dark area, No ghosting, No glaring, Eye-Care Ordinary LED lamp has extraordinary radiation while T100/T120 is truly Zero-radiation It has six levels of warm light and six levels cool white. The light comes on in cool white mode. You have to tap it to get warm and then you have six levels of warm Ultra-low voltage input and lighting temperature (capped at 40C) for absolute safety Maintains over 25,000 hours of full lumen output, 10 years life span