... ,tf card slot, mp3 ,fm radio,microphone teaching use yoga speakers Item Name: Teaching waistband amplifier with microphoneItem No.: GS-105Specification:Multifunction ... for Yoga, Gymnastics,Teaching, Conference,Acoustic Instruments,Camping and other outdoor EntertainmentAccessories:Headset Microphone : 1 pcRecharger : 1 pcHost Machine : 1 pcWaistband : 1 ...