Make a lasting impression with the elegantly styled 3M Overhead Projector Model 1880. It comes with an articulating closed doublet lens for especially crisp screen images, The closed head prevents tampering with the precision two-element lens. There's a color-tuning dial for edge-to-edge brightness, and high-to-low intensity switch that adjusts from 2,400 lumens to 2,800 lumens. A hush-quiet fan eliminates bothersome noise for quieter presentations. The 3M Overhead Projector Model 1880 comes with carrying handle and fold-down post for easy storing and moving, convenient digital clock for on-time meetings, lamp changer that makes changing lamps simple, and power-cord wrap.