Output power:40W(RMS THD=10%) Frequency response:80Hz~18KHzRated power:50WPower supply:~220V 50HzRechargereable sealed lead-acid battery:12V4.5AHSpeaker unit:8"bass 5"trebleWireless system:Hand microphones/earphone Wire system: two microphone line inputInstrument system:instrument line inpputMusic system:

1. built in USB MP3 decode 2. Line input(can conncet PC sound card/mini MP3/radio /DVD)3. With auto channel selection FM radio :87.5MHZ-108MhzRemote control: Master volume control 2.Line in sound source choice 3. Mp3 song/Frequency/Next or back 4. Built-in MP3 4,Built in MP3 songsDisplay system: 1. Master volume  2. Six music doppler frequency  3. Music next/back 4. FM radio up/down