The Plantronics Blackwire C435, a Computer Stereo Headset That Can Be Worn Without a Headband, Could It Be True? Yes, it is called the Blackwire C435 Computer Headset, and it is amazing. I know many people do not like the headband style for various reasons, but they want to have the stereo sound that comes with it. The Blackwire C435 Computer Headset has the option of being worn Monaural or Binaural as it comes … Continued