Minimalist Desk Lamp with Battery features a built-in, rechargeable battery that lasts up to 4 hours for on-the-go use. Optional timer automatically shuts off to save energy. Long-press power button allows gradual dimming. Lamp provides three adjustable, color temperature modes to relax, read and complete tasks. Full-spectrum lighting mimics natural daylight and helps reduce eyestrain. Flicker-free light zone is clear of shadows, halos and troublesome glares. Cost-efficient LEDs last up to 50,000 hours and use 85 percent less energy than incandescent lamps. Flexible neck with adjustable range of motion is ideal for any task. Lamp includes a 3' long USB power cord for convenient recharging. Wall adapter is not included.