Koolertron 72-inch 16:9 Widescreen Multimedia Player Mobile Theatre Movies Video Glasses Virtual Theatre 4gb Portable Eyewear 72" 16:9 Widescreen Multimedia Player Portable Video Glasses Virtual Theatre 72" virtual screen (at 7 feet) 16:9 wide screen High capacity built-in lithium polymer battery Radiation-free LCD technology;Sound: 3D stereo Operating system: Windows 2000/XP/Vista/Win7