42 inch interactive Advertising player widely apply to hotel ,supermarket ,shopping mall, metro , show room ... MPEG2, MPEG4 Synchro FunctionThere are two ways to realize synchronization, one way is to use AV distributor and AV ... lines with AV interface to connect the LCD AD , the other ... 130W 42 inch Advertising player ( apply to hotel ,supermarket ,shopping mall , metro , show room ...