USB,FM Output Power : 25wFrequency Rosponse : VHF 210-270MHzSpeaker:6'' 4Ω ... or AC110V 50Hz(optiona)Music Tone:MP3Assudio Input : Wirele Receiver/USB/FM/Wired MicWeight approx: 24.2kg(amplifier incl. battery),30g ... ),95*60*35(transmitter)Standard Configuration : amplifier(optiona:handheld or headset mic)Standard Configuration : amplifier,(optional : handheld or lavalier or ...