Luxo's KFM magnifying lamp provides excellent optics and energy efficient LED lighting. Lamp has a 5", 5D (2.25X) optical quality glass lens for best viewing. LED lighting is provided through a dimmable 9W LED bulb with a 4,000K color temperature and which produces 2800 lux at a 13" working distance. 45" K-arm on a table clamp offers an infinite number of adjustable positions. once adjusted, perfect balance is maintained by tempered steel springs. There are no knobs to tighten, nothing to adjust. Available in black or gray.