SUPERIOR AUDIO QUALITY Offering PC wideband, noise-canceling microphone and hi-fi stereo sound (C520), the Blackwire 500 Series provides a truly outstanding audio experience making it ideal for conference calls, webinars, listening to music and other multi-media. The Dynamic EQ feature optimizes your voice quality when on calls and automatically adjusts the EQ settings when you re listening to music or multi-media. SMART SENSOR TECHNOLOGY Experience industry-first Smart Sensor technology that lets you answer a call by simply putting on the headset making it the most productive and versatile corded headset on the market. COMFORT AND PORTABILITY Ultra-soft leatherette ear cushions and lightweight headband mean all-day comfort and a secure fit. Features ear cushions that fold flat, and includes a high-quality carrying case for easy storage and portability.