waistband portable voice amplifier mp3,fm radio,reverberation function ... :Multifunction all in one with Entertainment,Microphone, Amplifier, Loudspeaker,Music play and FM radioSupporting TF ... in 7-8 hours Function Mp3, FM radio, Amplifier, Line-in, loudspeaker, microphone, reverberationColor ChoiceBlackWeight 0. ... 1 pcWaistband : 1 pcSpecification : 1 pc waistband portable voice amplifier