LED desk lamp features a built-in 1200mAh battery to provide up to three hours of relaxing lighting when used on the first setting. Full-spectrum lighting mimics natural daylight for comfortable, reduced eyestrain. Three adjustable color temperature modes are great for relaxing, reading and specific tasks. Flicker-free light zone is clear of shadows, halos and troublesome glares for hassle-free lighting. Designed to be perfect for any task or work space, the base takes up very little room. The top portion quickly folds down into the bottom half when not in use. Integrated USB port includes a 3' USB charging cord for convenient power for your devices. LED bulb provides up to 50,000 hours of light for long-lasting performance.