Special Features:

Brightness up to 55 lumens; contrast ration 1000 to 1; manual focus; light source rgb led 30, 000 hours; resolution 854 x 480; screen size 12 to 120 inch; usb powered; operating temperature 41 to 104 f; windows xp/vista/7; pc configuration intel pentiumm2 or amd anthlon 2 ghz or above; 1 gb ddr sdram; usb 2.0; free hdd space 40mb

Properties:

An optical device designed for projecting data and/or images. it uses a cathode ray tube or an liquid crystal display and an optical system consisting of lens and circuitry to produce an image which can be projected onto a flat or curved screen or wall. it is a self-contained unit that has interface cabilities with computer systems and other video systems. it may be used for rear or front projection.