mini speaker,mp3 player,FM built-in Hi-Fi speaker built-in ... 8GB Line In function mini sound box/mp3 player/FM radio Features:High-textured aluminum metal surface makes it ... sources to amplify the powerAll functions(headset, USB connector, radio antenna, Line In and charging ) are in one ... 32ΩPlay time:9~20 hours with loudspeaker (depend on the volume);70 hours with earphoneSupport TF/ MicroSD card to ...