Premium audio, all-day comfort and intuitive call management. - Smart Sensor technoloy - Corded reliability - Designed for portability Corded reliability that’s ready when you are. Meet the Blackwire® 500 Series corded USB headsets with our industry-first Smart Sensor™ technology. It easily and intuitively juggles PC calls and multi-media using audio alerts to manage connection, mute and volume status. With easy portability, it offers premium hi-fi stereo audio (Blackwire 520) and all-day comfort at your desk or at home. 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. 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. 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. SOFTWARE-ENABLED FUNCTIONALITY With Plantronics Spokes software get the added value of: - Call control across multiple softphones - Headset control panel allows for customization of settings, including call notification and related options - UC presence automatically updated when on a call