Cord Length: 4.92 ft Headphone Frequency Response: 20Hz–20KHz Headphone Input Impedance: Vibration on: 16ohm+- 25% at 1kHz Vibration off: 32ohm+-25% at 1kHz Headphone Sensitivity: Vibration on:105dB +-5dB at 1mW from HATS 4158C at 1kHz Vibration off:103dB +-5dB at 1mW from HATS 4158C at 1kHz Microphone Frequency Response: 100Hz-10KHz Features: Color: White Driver Unit: 30mm Parts: Lifetime limited