... Power Nr-Fe-B Multifunctions Mini Portable Voice Amplifier K-8500 Product Features *Mini Portable, USB/TF card,recording and remote ... B magnet speaker,high sensitivity and instant response. *Multifunctions: Set USB, TF card port, microphone, speaker, voice amplifier, karaoke, ... recording.*SD/TF Card and USB support mp3, Ipod,Note book,mobile,PSP etc, wireless remote ...