Function
USB/ TF card/FM radio/Blue tooth/ remote control/Digital diplay.
Botton
Volume/ MIC Volume/Treble/Bass/MIC Echo
Feature
good sound / special designed light
DC/Battery
7.4V 4500mAH Lithium battery
Microphone
with 2 PC commom wireless microphone
Acessory
Wireless MIC*2, Remote,Adaptor,Audio line,User Manual.