... card slot which can connect flash drive,MP3 player,SD/MMC card to play MP3 music.*Built-in two channels wireless microphone.*Two 6.35mm ... Echo controls*Separate MIC/Wireless MIC.tape.line in/MP3 volume controls*Power,charge,Low battery,RF and AD LED indicators.*1x8"woofer ... ,1x1"tweeter.*Output Power :110W*Power supply:AC IN,12V DC IN.*Charging ...