... slot, mp3 ,fm radio,microphone yoga speakers waistband portable mini amplifier speaker Item Name: GSG-100 Specification:Multifunction all ... ( including battery )Size128*50*85mmApplication:Used for Yoga, Gymnastics,Teaching, Conference,Acoustic Instruments,Camping and other outdoor EntertainmentAccessories:Headset ... : 1 pcWaistband : 1 pcSpecification : 1 pc waistband portable mini amplifier speaker