The Blackwire C620-M by Plantronics is a USB binaural headset that was optimized to work in conjunction with Microsoft Lync. With its inline volume controls and support for wideband audio, the C620-m is designed for comfortable pleasantly fitting all day use.
TalkFree provides VoIP products to make high quality, low cost communications around the world. Our products support PC, Landline, ATA, and a wide variety of Mobile phones including Nokia, iPhone, and Android