Great sound, with noise-cancelling microphone and HD Voice to deliver professional sounding calls Robust, entry-level design that is easy to use, with all essential features plus volume control unit and mute for USB version All-day comfort, with foam cushions to keep ears cool and a flexible boom-arm that safely rotates 270 degrees Easy to use right out of the box Easy plug-and-play connectivity using the USB port on your PC Noise-cancelling microphones reduce unwanted background noise and are ideal in crowded and noisy open working environments. Digital Signal Processing (DSP) reduces background noise and removes echo. It also protects the user against sudden high peaks in volume. Enjoy high-definition sound with HD Voice and get crystal-clear communication. Jabra Spin Boom Arm with 270¢ª degree boom arm for easy adjustment without breaking. Customize your settings with Jabra¡¯s software applications. You get full integration and remote call control with the latest generation of softp