portable waistband amplifier with USB with USB or TF card slot ... No.: GSG-YB001 High lights:Multifunction all in one with Entertainment,Microphone, Amplifier, Loudspeaker,Music play and FM radioSupporting TF/SD ... ,Teaching,Promotion Activitives Conference,Acoustic Instruments,Camping and other outdoor Entertainment Accessories: Headset Microphone : 1 pcRecharger : 1 pcHost Machine : 1 pcWaistband ...