1).Advanced micro lcos screen, no radiation, no eye injury; 2).Perfect illustration of the end product quality screen : vdd / dvd, mp4 computer, x-box, aystation, xbox, 3g mobile phone display terminals the standard tv / av interface, enjoy high quality images, super source of audiovisual programs, supporting digital tv and portable display device 3).Unique non-spherical optical system pair 320 * 240 (qvga) or 640 * 480 (vga) resolution display with users left and right eyes; 4).Visual perception: lv-qa02: 40 inch video enjoyment from 2 meters; lv-va02: 80 inch video enjoyment from 2 meters 5).Three video standard options: ntsc / pal / secam 6).2.0 channel hi-fi stereo sound effect 7).With anti-fatigue patented technology, easy to carry and lightweight structure. 8).Using environment-friendly materials, human engineering design, people who wear glasses are not affected, and can also can wear goggles (included) 9).Low power consumption, lv-qa02 can be used for 8 hours when battery full recharge;lv-va02 can be used about 4-5 hours when battery full charged.