Portable audio fm radio waistband amplifier USB / TFcard slot with mircrophone /reverberation fucntion ... working in 7-8 hours Function Mp3, FM radio, Amplifier, loudspeaker, microphone, reverberationColor ChoiceBlack,Red, BlueWeight 225g ( ... other outdoor Entertainment Accessories: Headset Microphone : 1 pcRecharger : 1 pcHost Machine : 1 pcWaistband : 1 pcRemote control : 1 pcSpecification : 1 pc