... Teaching waistband amplifier with microphoneItem No.: GS-105Specification:Multifunction all in one with Entertainment,Microphone, Amplifier, Loudspeaker,Music play and FM ... Recharger DC7.4v Battery working time Keep working in 7-8 hours Function Mp3, FM radio, Amplifier, ... Line-in, loudspeaker, microphone, reverberationColor ChoiceLight greenWeight 0.5kg ( ...