Features: •Highest lumen output LED magnifier with standard 4 diopter (2X) lens•Reduced glare, heat and energy consumption•Low voltage (15v) power•Energy efficient by design, using only 8 watts on high•Built in optional auto shut off at 4 hour intervals•High quality die cast aluminum shades•Heavy duty extruded aluminum arms and stamped steel plates for extreme abuse•5″ and 6″ Round magnifiers also available Warranty: •5 Years or 50,000 hours pro-rated LED warranty•5 Year mechanical warranty…best in the business