... adjust Stretch, 4:3, 16:9, ActualSimple and intuitive 5-in-1 button make it more pleasure ... output:Stereo,Distortion:0.03%,InterfaceUSB2.0 High speed data transfer, 4MB/STemperatureOperation ambient Temp -5C-+40 C ... /AVI/MOV/MP4/ASFRM/RMVB/FLVMusic FormatMP3, WMA, Flac and APEPicture formatJpeg, BMP, GIF, feature: Rotate, Zoom, ... User Manual 80inch hd Wireless Video Glass with IPD and Focus adjustment