use for teaching usb digital waistband amplifier mp3/fm radio/recording/microphone usb and TF card slot use for teaching Item No.: GS- ... / Journey / Entertainment etc..Product’s introduction:GS-106 Multi-media Digital Microphone is made with built-in mp3 audio decoder, through ... .MENU:Five parts: Music, Record, FM radio, LINE-IN mode, System settings and Calendar.Calendar:Press [PREV]or[NEXT]for date ...