... ,4" red 6 digital led digital clock 100% feedback Led digital clock with computer RS232/485 communication 1 led digital ... clock iterm GC406 Case dimension:710mmX160mmX40mm2 Display 4 ... ",6",8",10",12",14",16",18",20",22",24",26",28",30",32",34",36",38",40 ... ",6",8",10",12",14",16",18",20",22",24",26",28",30",32",34",36",38",40 ...