1.Integrated retractable handle and wheels for easy carrying 2.Convenient for outdoor & indoor activity 3.guitar input jack

1.This portable Public Address System can be used either indoors or outdoors at any demanding venue.2.Integrated retractable handle and wheels for easy carring.3.with USB Jack and SD card reader jack , can read and play song.4.Microphone Echo control,Treble/bass control

5.With USB and SD card reader jack ,box full of plastic6.Support two VHF wireless microphone , with two wired microphone jacks and one guitar input

7.with external battery jack,can connect with outer DC12V battery8.with wireless microphone input  function

9.with guitar input jact 

the inside picture 

the picture of canton fair 

7.1 wireless speaker system