Waistband portable teaching microphone headset,usb,tf card slot, mp3 ,fm radio,microphone, ... .5kg ( including battery )Size128*50*85mmApplication:Used for Yoga, Gymnastics,Teaching, Conference,Acoustic Instruments,Camping and other outdoor EntertainmentAccessories:Headset Microphone ... pcHost Machine : 1 pcWaistband : 1 pcSpecification : 1 pc Waistband portable teaching microphone