Portable Mini Multimedia LED Projector Support 1080P Source Input Native Resolution:320*240, Contrast Ratio:200:1,Aspect Ratio:4:3, Support 16:9,10-100 Inch Image with AV/USB/VGA/HDMI/Mini SD Interface for Personal Entertainment and Household Education Contrast: 200:1 Built-in Hi-Fi speakers Brightness:50 lumens AV,USB,mini SD,VGA,HDMI interface Aspect ratio: original 4:3 and 16:9 compatible