Type:Digital Projector Style:LCD Use:Business & Education,Home Home Theater Projector:Yes Portable:Yes Brightness:5500 market lumens Contrast Ratio:5000: 1 Supported Resolution:1290*1280 Lamp Life:20K Hours Input:USB AV VGA SD HDMI Output:3.5mm EarProjection Size:30-130'' Aspect Ratio:4: 3 6: 9 Keystone Corredction:Auto