Features :- amplifier, speaker, wireless microphone, (remote control )
other features :- bluetooth, fm radio, =(usb/memory card
it can be used for entertainment, preaching, singing, advertisement, evangelism program, camping, etc
at the back is the control station i.E -- the mode where you will select fm mode for radio, bluetooth mode for bluetooth, and system mode for microphone only, but note that the microphones can still work on any mode u choose unless you off the microphones
other controls at the backside is the volume control, treble control, bass control, mic volume control. It can be charged upto 4 hours before using or when the battery is low by indicating red light (it will indicate green light when the battery is full) it also has an extra battery slot port where you can put extra battery incase if you want to use it for more hours.