... Advertising Player, Android Operation System, 55inch (available: 32, 42, 46, 55, 46inch) The Android OS advertising display ... With Android OS, You can install your own app in device easily. LCD Detail ----------------------------------------------------- 55"LCD Panel 1920x1080 ... Advertising Player, Android Operation System, 55inch (available: 32, 42, 46, 55, 46inch)