... slot to read FM radio, MP3 player,Amplifier, microphone 3.7 V battery FM radio waistband amplifier Item No.: ... GS-102High lights:Functions: FM radio, microphone, recording, ... hours Function Mp3, FM radio, Amplifier, Line-in, loudspeaker, microphone, reverberationColor ChoiceredWeight400g ( including battery ) Size 136*106*50mmApplication ...