This LED lamp offers three lighting modes and six levels of brightness, all controlled by a touch panel at the base. That's 18 unique settings to get the perfect light balance for your tasks. It has a built in rechargeable battery that allows you to either leave at your desk, or unplug and take it with you to use anywhere you like. Aluminum and silicone construction gives superior construction materials and high end decor while providing optimal lighting . The light panel has 28 LEDS and will last over 50,000 hours.!-- split --Enhanced lighting controls to reduce eye strain. Three lighting modes and six levels of brightness controlled by a touch panel provide 18 settings to get the optimal soft or bright lights for your application