FM radio/mp3 player waistband loudspeaker with reverberation of sound with headset microphone used ... play and FM radioSupporting TF card or USB for music ( mp3 format ) ( USB 2.0/1.1 )With USB recharge connectorPower ... Battery working time Keep working in 7-8 hours Function Mp3, FM radio, Amplifier, loudspeaker, microphone, reverberationColor ChoiceBlack,Red, BlueWeight 225g ...