... :Multifunction all in one with Entertainment,Microphone, Amplifier, Loudspeaker,Music play and FM radioSupporting TF ... voice, good penetration.Aluminium magnesium alloy material, professional and fashion appearanceTechnique Data: Output power12WFrequency Response100Hz-20KhzEcho ... in 7-8 hours Function Mp3, FM radio, Amplifier, Line-in, loudspeaker, microphone, reverberationColor ChoiceBlackWeight 0. ...