... W 1.The bus lcd ad player can work from 12-36volt. 2.All lcd ad player can support CF Sdcard,USB ... the memory volume from 1GB-16GB> 3.All lcd ad player support file: MPEG1,MPEG2,JPG,MP3,MP4,VMA,VOB ... in clock and calendar function in the system of player 11.Support 5 groups of auto power-on/off ... amplifier system, and then the audio cable of the player will be directly connected with the speaker of bus ...