Features / specification: Display Size: 68 inchesPixels: 640H*480V*RGB(922K) Angle of View: Diagonal32 degrees Video Input: VGA ,SVGA ,XGA ,S-video& composite video, (NTSC/PAL),all scaled to VGA(60Hz-75Hz) 3D Stereoscopic Format: Field sequential 3D stereoscopic VGA signal Sound Function: Double channel stereo Adjustment Function: OSD&Cable controller AC Power Supply: 100V??220V/50Hz DC Power Input: 9V DC Basic Accessories: AC adapter, eye patches, cables Power Consumption: 4.9W Product Profile GVD520-3D is a glasses-style 3D LCD display, with VGA / S-Video / Composite Video and Audio input ports, presenting you with a big 68-inch virtual screen and supporting create an full-screen stereo viewing. Resolution is 640*480 true color. As a personal display, this product can connect to PCs, DVD players, PS series game consoles, Xbox series game consoles, etc. for private viewing of games, movies and pictures in larger screen. Particularly its stereo viewing function makes you enjoy viewing games, movies and pictures in stereoscopy on PC platforms. Also this product can be used as 3D stereo display terminals in the VR system. When being used in stereo viewing of games, movies and picture, it works stereoscopically only with PC system and some specific requirements are needed: * CPU: Pentium 90 MHz or greater. * OS: the best to be Windows XP. * NVIDIA graphic card and NVIDIA 3D stereo driver installed * Games should be any Direct3D or OpenGL based 3D PC games, including 3D network games, which you can easily find in the market. * Movies should be stereo contents, such as 3D DVD, whose formats are field sequential or sync-doubling (up/down or left/right screen mode). * Pictures should be .JPS or .H3D formats . Generally, GVD520-3D is a very excellent 3D video glasses with mature technology and high quality, which is very competitive in the market.