2-IN-1: You can either stand this lamp up on its own or with the adjustable c-clamp, you can clamp it onto any surface either vertical or horizontal up to 2 wide. For places like the school, dorm room, office, bedroomFLEXIBILITY: Light up a large area and move its position with the flexible spring-balanced adjusted arm that can extend up to 18" and the rotatable base and shadePREMIUM QUALITY: The lamp stands firmly thanks to the weighted base and the swing arm and lamp shade are made from solid metal with a black finish, making them durable and exquisite to look at. The power plug is UL-listed, making it safe to useUSER-FRIENDLY: Its slim shape and 55 power cable means you can place it anywhere without taking up too much space and the easy to use on/off rocker switch ensures day-to-day useBULB REPLACED: This desk lamp without the bulb, it fits both E26 and E27 bases for proper tallation. We highly recommend an A19 bulb and G25 bulb is also compatible as an alternative. Please note that other bulb models are not recommended. Using non-specified bulbs may result in suboptimal lighting effects, unstable performance, or a poor user experience.