Wave+Plus Magnifiers - the industry's first rectangular lensed illuminated magnifiers. These magnifiers feature a 3.5-diopter (1.85X) lens with a 13” focal length and a 6.75” x 4.5” distortion-free viewing area. Two 13-watt compact fluorescent lamps with individual lamp switching. Blue indicator lights are located on either side of the magnifier head. UL/CUL listed. Standard, ESD-Safe, Anti-Reflective or UV models available.