Flylinktech&reg; UC30 Mini Portable LED Projector HDMI AV VGA USB SD Multi-media Home Theater LCD Projector -Black Resolution: 1920x1080; Contrast: 500:1; Brightness: 150 Lumens; Aspect Ratio: 16:9 and 4:3 Keystone Correction: 15 degrees; Image Size: 30-100 inch; Projection Distance: 1.07-3.5M Multi-function input AV/VGA/USB/SD/HDMI/Micro USB The projector is not recommended for PPT or business presentation, ideal for home theater movies and video game use. Can be charged with power bank by Micro USB input