Earphones with Microphone and Volume Control Driver unit: 10 mm Impedance: 16 +/- 10 % Frequency range: 20 Hz – 20 kHz Sensitivity: 96 dB +/- 3 dB /1 mW (S.P.L at 1 KHz) Cable: 1,2 m 5 % Plug: 3,5 mm Microphone Dimensions:7x36mm Sensitivity: 424dB dB /1 mW (S.P.L at 1 KHz) Frequency Response:30~16 kHz Weight: 15 g