3D Video Glasses with more than 80 inch screen:SpecificationTwin high-resolution 640x480 (920,000 pixels) LCD displays; Equivalent to a 80" screen viewed from 2 meters; Millions of colors; Integrated rechargeable lithium ion battery allows approximately three hours of continuous operation; 60 Hz progressive scan update rate;Output port (video glasses connect port), PHONE port, RGB port, Audio Input, Video Input, DC Input, VGA input;2D/3D control box have function: work light /Power light; Contrast /Brightness; TV/AV (CVBS-AV, Component- RGB, PC+HV -VGA)selection; 2D/3D; R/L; left move/right move;Features:Relaxsee 3D enabled for manual 2D/3D control ;Can be worn with or without prescription eyeglasses ;The integrated rechargeable lithium ion battery gives approximately three hours of continuous viewing ;Support for 3D video format Side by Side ;Support for standard 2D video ;Support VGA Port, it can connect with PC (NVIDIA video card) to watch 2D/3D Video Support RGB component video, it can connect with Blu-ray DVD to watch 2D/3D Video