... sales etc.1. Auto circulation player when the Monitor is startedwith CF,SD,U2.Support formatJPG,MP3,MPG1/2/4,AVI,DIVX3 ... , height < 90 pixel8.Support OTG function,Copy program mutual between card to card9. File rename ,move ,delete,build catalog functions,etc ... speed . 13. Support the instant upgrade of software. 19" Advertising LCD Monitor