DISCONTINUED- Replace with C500 Series No matter you are in home, at the office, or on the go, the Plantronics corded Blackwire 420 headset allows cell phone professionals appreciate crystal-clear PC audio anywhere work happens. Designed for all-day pleasure, these strong and easy to use features provide you with the freedom to experience PC audio through a high-quality headset anywhere you need it. It's effective and easy to use with inline controls such as a call/answer/end option and mute/volume control. The headband is versatile for the ideal fit and the Plantronics Blackwire 420's sleek ear cushions make sure maximum possible pleasure. These corded headsets is maximum possible for conversation marketing and sales marketing and sales communications, experiencing music, pc giving presentations, online workshops, or web conference. Features: Plantronics Blackwire 420 is wideband headset for best PC sound telephony Dynamic EQ music instantly adapts for speech and media use Noise-canceling micro-phone stand filter systems out background noise Plantronics Blackwire 420 enhanced digital indication handling technological innovation provides more natural speech sound Plantronics Blackwire 420 has sound Guard technological innovation provides protection against sound spikes