Portable wireless meeting Soundbest SB 677 UC 1bh mic pegang wireless 1bh mic jepit + transmiter wireless 1bh mic headset Kaset Tape, USB / SD Card slot playback Tone control ( Echo / bass / Treble ) Baterai rechargeable built in charge Max power 120 W Frequency range : VHF 165 - 265 MHz DC 12 7Ah baterai charge suara oke bro cocok buat pidato, mesjid dan ceramah garansi 1thn