1)mini projector,projector,WIN CE 5.0 2)support MPEG4 AVI, ... WORD,EXCEL,PPT,PDF,MP3,WMA etc.format MINI PROJECTOR:mini projector,projector,WIN CE 5.0support MPEG4 AVI, RM, RMVB, ... input:14PIN USB port ,VGA signal input and video output20)Operating mode:2.4GUSB mouse/keyboard and infrared ... Extend neck:Micro SD/ TF card23)Audio:high efficient speaker24)Video format:MPEG4 ,AVI, RM, RMVB, FLV, WMV, 3GP ...