... has many function:Photo Slide Show;Music Player;Video player,E-Book(text) Specification: Brightness40 Ansi lumensResolutionVGA 640*480Contrast800:1Project Ratio1 ... (OTG),TF cardMedia functionPhoto slide show,Music player,Vedio palyer,E-book(TXT)VGA compatibleWindows Xp,Windows Vista,Window 7,Mac ... CE/FCC Unit Dimension(W/D/H): 75*75*22mm Mini AV LED digital projector