HD Head Mounted Display, HMD, Video glasses. 1.72-inch Virtual Screen 2 ... HD Head Mounted Display, HMD, Video glasses1.72-inch Virtual Screen2.Display pixels: 320*2403.LCD micro-display, ... 850 ~ 1000 mAh. Input signal: NTSC / PAL color video signal. Field of view: 33° Operating temperature: -15°~+ ... design for Myopia, people needn’t to wear glasses.NTSC/PAL auto switching. Sound, brightness, contrast ...