teaching waistband amplifier with microphone headset,usb,tf card slot, mp3 ,fm radio,microphone teaching use yoga speakers Item Name: Teaching waistband amplifier with microphoneItem No ... , Gymnastics,Teaching, Conference,Acoustic Instruments,Camping and other outdoor EntertainmentAccessories:Headset Microphone : 1 pcRecharger : 1 pcHost Machine : 1 pcWaistband : 1 pcSpecification : 1 ...