... viewing angle; 3. Playlist; 4. OEM, ODM provided 55"LCD Signage Touch Screen Specifications:1. HD Resolution: 1920*10802. Contrast: 1500 ... . Tempered glass surface Main functions1. Full HD 1920*1080, LCD screen, support display models of 16:9, 9:16 ( ... the display through Internet.3. Interactive optical multi-points touch function, touch in two points simultaneously.4. Compatible multimedia file formats ...