• Frequency Response: 20Hz~20KHz• Nominal Impedance: 32 ohms• Speaker Diameter: 40mm• Sensitivity: 105dB±3dB (at 1000Hz )• Jack Plug: 3.5mm Stereo• Cable Length: 1.8m• “±Bass Controller” to increase / decrease bass for enhancing the overall detail of sound• Earphone Hook Included• In-line Master Volume Knob and Microphone Switch