SP3.1#& SPEAKERS OF MOBILE PHONES (HDR9270-014130) KT: 15MM LONG [+0.08/-0.03] MM WIDTH 9MM [+0.08/-0.03] 85DB OUTPUT SOUND LEVEL [+3.0/-2.5 ] THE LOWEST RESONANCE FREQUENCY 590HZ [+/- 150].
SP3.1#& SPEAKERS OF MOBILE PHONES (HDR9270-014130) KT: 15MM LONG [+0.08/-0.03] MM WIDTH 9MM [+0.08/-0.03] 85DB OUTPUT SOUND LEVEL [+3.0/-2.5 ] THE LOWEST RESONANCE FREQUENCY 590HZ [+/- 150].