Headset for Nortel T7208 T7316E Telephone - Single Ear HD Sound Noise Cancelling
The flexible microphone boom adjusts freely to any position, and is longer than non-pro headsets. BT Featureline Phone : MARK II. Frequency: 100Hz—16000Hz. Directivity: Uni - Directional. Impedance: Max:2.2kΩ@1kHz.