Thanks to USB (Universal Serial Bus) & 3.5mm connectivity, the Blackwire C5210 headset can be used in many ways & connected to various devices. The ergonomic design makes it very comfortable to wear. ALL-DAY WEARING COMFORT & UNIVERSAL CONNECTIVITY If you need to wear your headset all day, the Blackwire 5200 Series offers you the ultimate in comfort. Its ergonomic design makes it comfortable to wear throughout the day, even during long conversations. You can also connect it to various compatible devices to help you work freely anywhere in the office First class audio quality A noise cancelling microphone with flexible microphone boom filters out background noise Easy to use/simple Intuitive inline controls for easy call management Wearing comfort all day long, even for frequent callers Padded, dual loop on headband OUTSTANDING SOUND QUALITY FOR MORE PRODUCTIVITY Modern workplaces are often loud & full of distractions. With the Blackwire 5200 Series, you can hear & be heard better, enjoy privacy in conversations & be more productive. It features soft, comfortable ear cushions with passive noise cancelling & a precisely aimed microphone that eliminates nearby voices. A HEADSET THAT ADAPTS TO THE WAY YOU WORK Adapt your headset to the way you work. The special, customizable mute feature provides privacy when youre on the phone & ensures that youre always easy to hear. Set your voice prompts to give you even more control over your calls. Highlights: Ideal for all-day use or long conferences Noise cancelling microphone for first-class calls Answer or end calls, change volume or mute with one click USB (Universal Serial Bus) & 3.5 mm connectivity Ergonomic design for high wearing comfort TECHNICAL SPECIFICATIONS Connection options PC via USB (Universal Serial Bus), mobile phones & tablets via 3.5 mm port & devices with USB (Universal Serial Bus)-A support Ideal for users with a high communication workload at the PC & high multimedia usage Audio performance Dynamic EQ function, microphone frequency range 100 Hz-8 k Hz optimal for wideband voice telephony (up to 6, 800 Hz), Hi-Fi stereo playback (C5220, C5220, USB (Universal Serial Bus)-C only) Output 20 H-20 k Hz, enhanced digital signal processing (DSP), noise cancelling microphone, customizable voice announcements with Plantronics Hub software (mute/volume)* Hearing protection Sound Guard DIGITAL provides protection against noise levels above 118 d BA; limiting acoustic shock responses (identifying & reducing sudden sharp increases in signal strength); averaging measurements with time weighting prevent daily average noise levels from exceeding 85 d BA (supported by Plantronics Hub). Additional low volume hearing protection against acoustic shock using Plantronics Hub software reduces noise spikes to 102 d BA. C5210 USB (Universal Serial Bus) (monaural); C5210 USB (Universal Serial Bus)-C (monaural): C5220 USB (Universal Serial Bus) (stereo); C5220 USB (Universal Serial Bus)-C (stereo): for UC applications & softphones from Avaya, Cisco, Microsoft & others.* Certified for Skype for Business Download the latest version of the Plantronics Hub software to enable one-touch answer/end calls with these softphones.