All-in-one battery sound system. – MP3 / USB /SD player and BLUETOOTH. – 2 MIC/LINE + 1 STEREO IN. – 2 USB IN for 2.4GHZ U24H / U24B wireless mics. – 1 LINE Out. – HI + LOW EQ. – Built-in FX. – 400W Class D amp. – 1” neodymium driver and 12” woofer. – Li-ion battery / 10-12 hours working time