This tiny timing multi-media player system is very easy to use, actually green,definitely no malicious software and no Trojan!! Audio and video files with variaty of format can be played in a desired period of time! easily and natually switch, no stops and black screen phenomenon! media playing, inserting and playing in turn within a desired period of time,there are 5 different play modes, basically including the play demands of advertisements and video. This system is fit for school, manufacturing company, small-scale broadcast station! Also can be used as the timing machine for reminding!