* Speaker dia. :Ф30 mm

* Microphone : Ф6X5 mm -56db+-2db

* Frequency response: 20 ~ 20KHz

* Sensitivity: 100 db +-3 db at 1KHz

* Max. Power input : 250 mw

* Impedance : 32 Ohm +-15 %

* Jack : Ф3. 5 mm stereo

* Available for MD / CD / MP3 / Computer