the model 1820 takes years of classroom use, and yet it's stylish enough for any executive boardroom. a strong 2,700-lumen light output delivers bright presentations in various lighting conditions, and a wide-angle singlet lens projects large, clear images in the smallest rooms. the closed-head design protects the lens from dust, and smudges. a lamp ejector makes replacing lamps simple, and a thermal-protection circuit prevents the unit from overheating. features also include accessible power switch that puts the controls where they count, at fingertip reach, fold-down post, and handy power-cord wrap. parallel imported warranty: warranty one year delivery within 2-4 business days