Features: Sealing design and efficient radiation, which greatly improves the overall stability and lifetime. LED light source, brighter colors, and richer details. Free switch between the 16:9 and 4:3 picture modes. Mute, isolation and dust prevention design, and no internal cleaning throughout its lifetime. Low power consumption, more energy efficiency, and more environmental friendliness. Various functional interfaces: AV/VGA/USB/SD/HDMI/TV. Functions of optional keystone correction and picture keystone adjustment.