Specifications: full format video player: mp4, rmvb, avi, rm, mkv, etc system support: support multi-media(music, picture, video, txt) imaging technology: tft lcd native resolution: 320*240pixels brightness: 400-600lumens light: led contrast: 800:1 led life time: 30000+hours operation mode: manual operation projector distance: 0.8-2m screen size: 24-80 inches aspect ratio: 4:3/16:9 color reproduction: 16.7k input: usb/sd/vga/av speaker: 8ω1w supported resolution: 1920*1080pixels language support: english, chinese, etc. unit size: 12.7*8.15*4.85cm