- Frequency Response: 20Hz-20kHz- Driver Impedance; 32Ω±15% (at 1kHz 1mW)- Driver Size: 12mm- Input Power: 3mW-Rated(at 1kHz)- Output S.P.L: 110±4dB (at 1kHz 1mW)- Microphone Sensitivitys: -40±3dB- Cord Length: 1.2m- Plug: Type-CEarphone RE701C