... '' High Definition TFT Color LCD Display(16:9), Built-in Speaker2.Metal painting case, with the theft -proof lock ... : Voice could be set according different period, suitful for the human-based management of hotel, restaurant, hospital, ... Angle178°(H)/178°(V)Aspect Ratio16:9Audio OutputBuilt-in speaker: 2Wx2Play modeVideo files could be set to ... TFT LCD Color Advertising Display(16:9), Built-in Speaker