3M 1850 3M 1850:- 220V/50Hz. Overhead Projector. Very bright: 2,500 lumen. Longer lamp-life: provides 65 hours to about 130 hours average life from an ENX lamp (about double its normal life). Lamp changer and one ENX lamp included. Wide-angle lens: 11.5" focal length with a single-element, inverted siglet head design. Rugged construction: Tough, yet lightweight and known for their reliability. Big, 10.5" x 10.5" low-glair stage is large enough to show transparencies without cropping and reduces strain on eyes. Folding arm: The projection arm folds down for easier transport and storage. New inverted head design lowers overall projector height by 5-1/2" so audiences see your presentation, not the projector. Ultra-cool design keeps standard transparencies from curling. Hush-quiet fan enhances your presentation. Convenient cord wrap. 15' power cord. Thermal-protection circuit disconnects power to lamp in the unlikely event of overheating.
Unit Dimension: 23 H x 14"W x 18"D
HeadInverted singlet (one element), wide angle lens