Telephone Call Centre Headset Noise Cancelling Microphone RJ11 Headset For Office Phone Feature: Quick-disconnect function Adjustable metal headband can be adjusted Speaker and headband connection rotate 360 degree Replaceable soft foam or soft leatherette ear pad optional Stylish design, lightweight, durable and comfortable touching for all day use Noise-cancelling microphone filters out background noise, so voice transmission is exceptionally clear. Bendable mic arm 330 degrees rotatable to be positioned for optimal comfort and voice transmission. Swing-sway feature lets you move the mic out of the way for beverage breaks Specification: Material: Metal, ABS and POM Sensitivity: 108dB 2dB/mw at 1KHz Frequency Response: 200 - 4K Hz Omni directional Microphone Frequency Response: 20 - 3000Hz Impedance: 150 5 Sensitivity:-58dB 3dB Maximum Power: 10mW Whole Cable Length:Approx.120cm Packaged included: 1 x RJ11 Headset 2 x RJ11 Cable Detail Pictures: