The Artistic 990007 flexible neck desk lamp features a rechargeable Lithium Battery and is the ideal size for your desk or night stand. Environmentally friendly LED technology provides natural color light which is easy on your eyes. The No flicker LED lights prevent your eyes from tiring, making it perfect for night time reading in bed, studying, etc. Provides up to 2.5 hours of light, and charges easily via any standard USB Port. No flicker LED lights prevent your eyes from tiring.