... /reverberation for Yoga,Teaching,conference Item Name: Waistband loudspeaker/microphone Item No.: GS-106High lights:Multifunction all ... in one with Entertainment,Microphone, Amplifier, Loudspeaker,Music play and FM radioSupporting TF/SD card ... in 7-8 hours Function Mp3, FM radio, Amplifier, loudspeaker, microphone, reverberationColor ChoiceBlack,Red, BlueWeight 225g ( including battery ...