Plantronics Blackwire 510 USB Headset, On-Ear Mono Headset, Wired USB HEADSET: Monaural USB headset with microphone (Blackwire 510) is ideal for users who prefer to leave one ear open to their environment. SMART SENSOR TECHNOLOGY: Intuitively manages calls and audio so you can answer a call by simply placing the mono headset on your head. COMFORTABLE DESIGN: Simple, intuitive, inline controls on the USB headset let you answer/end, mute, and control the volume of your calls with ease, while ultra-soft leatherette ear cushions and lightweight headband means all-day comfort and a secure fit. DYNAMIC EQ: Microphone headset with dynamic EQ feature optimizes your voice quality when on calls and automatically adjusts the EQ settings when youre listening to music or multi-media playback COMPATIBILITY: Plantronics headset is built to work with Amazon Connect, Chime and other UC applications and softphones from Microsoft, Avaya, Cisco and others.