Plantronics Calisto 3200 UC USB-A Portable Speakerphone - Microsoft Teams - Microphone frequency response: PC wideband up to 6.8 kHz, full duplex audio, echo cancellation - Microphone voice pickup distance: Group speakerphone rated up to 3 m - Call controls: Call answer/end, mute, volume up and down - Dynamic mute: Yes - Applications supported: Plantronics Hub desktop version only - 214181-01 - 12 Months Limited Warranty