Specifications: Output Power: 100WT.H.D<0.1%Frequency response:50Hz 20KHz ± 3dBAudio input:Wireless/Wire microphone/CD/DVD/ TYPE/USB/SD Card/External audio sourceSpeaker:1X10" woofer, 1X3" tweeterPower and voltage:AC220V 50Hz/110V 60Hz availableBuild-in rechargeable battery:2X12V/5AhBattery available time:6hours(Amplifier), 4 hours(TYPE/DVD)Wireless receiver:UHF 700MHz-800MHzChannel:2X16Wireless mic:collar clip/ hand-held mic/ headset mic.Wire mic:Any mic is available