Product Preview Video – Plantronics C420 Computer Headset for Unified Communications, VoIP, Skype, Podcast, Gaming and more. The Plantronics C420 USB computer headset is a binaural, USB headset that is plug-n-play ready and provides an excellent headset for any application that requires a headset for your computer. For more information and ordering, please visit Plantronics C420 USB Computer Headset One response to “Product Preview Video – Plantronics C420 Computer Headset for Unified Communications, VoIP, Skype, Podcast, Gaming and more.” This makes everything so completely painless. Reply Leave a Reply Cancel replyYour email address will not be published. Required fields are marked *Comment * Name * Email * Website