... ,SD,MMC,MS card and USB easy to move 42inch digital signagepanel size :42inch real color LCD screenaspect ratio : 16:9panel ... .post offices ,hospital,schools4 public places subway airports,stations,gas station,toll station,bookstores,parks,exhibition halls,stadiums,museums,convention centers ,ticket ... ,internet bars,beauty shops,golf course. 42'' floor standing lcd digital signage