Natural Light LED Multi-function Desk Lamp -black Perfect simulation of natural light - providing natural, non-flickering light for stress free productivity and enjoyment. Adjustable brightness and 4 different light spectrum modes for Reading, Studying, Relaxing, and Sleeping. Color temperature --Study mode 6000K-7000K, reading mode 4300K-5300K, relaxation or bedtime mode 2500K-3300K. An easy-to-use touch panel to turn on/off, set timers, adjust brightness, and choose different modes. With a USB Power Port to charge smart phones, MP3 players, etc. Use quality LED light source to save up to 90% of power efficiency. LED panel arm can be adjusted up to 140;Lamp center post can spin 180 and can be adjusted up to 40. 17.25" high center post with 14" arm and 7" sq. base.