Nakamichi NK600 Series On-The-Ear Headphones with Mic - Retail Packaging - Violet Type: On-Ear Frequency Response: 20 - 20,000Hz Input Impedance: 32 ohms Sensitivity: 108dB S.P.L. at 1KHz Cord Length: 3.0 feet - 5.0 feet Microphone Impedance: ~2.2K ohm Microphone Frequency Response: 75 - 16,000Hz |