Speaker dia.:Ф30 mm
Microphone :Ф6? mm -56db?db
Frequency response: 20 ~ 20KHz
Sensitivity: 100 db ?3 db at 1KHz
Max. power input : 250 mw
Impedance : 32 Ohm ?5 %
Jack : Ф3.5 mm stereo
Available for MD / CD / MP3 / Computer