Connects to PC via USB/USB-C, connects to mobile devices and tablets via 3.5mm and devices that support USB-C

Ideal for Users with extensive PC communication and multimedia

Audio performance Dynamic EQ, microphone frequency response 100 Hz–8 kHz optimal for PC wideband voice telephony (up to 6,800 Hz), hi-fi stereo (C5220, C5220 USB-C only) receive frequency response from 20 Hz–20 kHz, enhanced Digital Signal Processing (DSP), noisecanceling microphone, adjustable audio alerts with Plantronics Hub software (mute/volume)*

Hearing protection SoundGuard® DIGITAL protects against sound levels above 118dBA; Anti-startle (during calls) detects and eliminates any large sudden increase in signal level; Time-Weighted Average prevents average daily noise exposure from exceeding 85 dBA (enabled by Plantronics Hub). Additional lower level hearing protection against acoustic startle is provided by Plantronics Hub software limiting peak levels to 102 dBA

Models C5210 USB (Monaural); C5210 USB-C (Monaural): C5220 USB (Stereo); C5220 USB-C (Stereo): Built for UC applications and softphones from Avaya®, Cisco®, Microsoft® and more.* Certified for Skype for Business