The Koss CS95 communication headsets boast a full range of sound that helps bring conversations to life. With high noise sensitivity and reduced sound distortion - not to mention hands-free communication via an electret noise cancelling microphone - serious multi-taskers can revel in the advantage offered by the CS95 single-sided headset. One foam ear cushion creates an open, hear-through sound. Whether you employ telephony, voice-activated, or voice recognition software - or indulge in computer games with sound cards that feature built-in bias supply* - CS95 headsets offer long-lasting comfort to accommodate your communication needs. Specifications: Frequency range: 30 - 16,000 Hz, impedance: 32 Ohms, Sensitivity: 91 dB SPL. Cable: Straight, Single Entry, 8ft. Finish: Grey/Black