Long-Lasting Battery, Lightweight:Providing up to 6 hours on maximum brightness and 100 hours on the lowest setting, the 3500mAh built-in battery provides plenty of hours of use. Its lightweight and can be transported anywhere. Eye-Caring Light, Dimmer Brightness:This modern stylish lighting fixture features 42 energy-efficient LED bulbs; Providing a choice of bright light for work or low diffused mood lighting for reading and relaxing ambiance. Auto-Off Timer, Touch Control:The desk lamp offers the convenience of a built-in 30-minute timer and simple brightness adjustment through the touch button. This table lamp is ideal for the home office, bedroom, living room, hobby room or workshop. 360 Adjustable Neck, Memory Function:A unique feature of this desk lamp is theflexible gooseneckthat can be rotated in any direction you desire. It also features a memory function that remembers the last brightness setting you used. Super Energy Efficient:The 5w bulb is not only easy on the eyes, its also incredibly energy efficient. Using 10 times less energy than a standard incandescent light bulb, without producing any unwanted heat. Controlled bright light available whenever you need it.