Speaker Size: 10 MM Sensitivity: 96 +- 3db at 1khz 0.5v rms Frequency response: 20HZ: 20000 HZ Plug Type: 3.5 MM Microphone Dimensions: 4*1.5 MM Sensitivity: 42 dB+/-3Db Frequency response: 30: 16000 HZ Speaker Very comfortable on the ear and conforms to the shape of the ear, loud and clear sound an..