... slot, mp3 ,fm radio,microphone yoga speakers waistband portable mini amplifier speaker Item Name: GSG-100 Specification:Multifunction all in ... ,Music play and FM radioSupporting TF Card and USB for music ( mp3 format )With USB recharge connector( USB ... greenWeight0.5kg ( including battery )Size128*50*85mmApplication:Used for Yoga, Gymnastics,Teaching, Conference,Acoustic Instruments,Camping and other ...