WAVE+Plus Magnifier, 30 inch arm, 3.5-diopter lens and weighted base. The Luxo Wave+Plus Magnifier with stadium shaped lens offers the largest distortion-free viewing area in the industry.This magnifier features a 12 inch focal length and a 6 ¾ inch x 4 ½ inch viewing area in a 3.5-diopter (1.88X) model.Two 13-watt compact fluorescent lamps with individual lamp switching.Blue indicator lights are located on either side of the magnifier head. Attached with weighted base mount. Available in Black (BK) or Light Gray (LG). ESD-Safe models for use in static-sensitive environments and UV models are also available.