Poly Voyager 6200 UC USB-C Bluetooth Neckband Headset With Buds - Black - - Certified for Skype for Business (SFB) & UC applications - Frequency Response: 20Hz–20kHz - Audio performance: Active Noise Cancelling (ANC) - Microphone Technology: Boomless, four microphones with digital signal processing - Applications supported: Poly Hub Application (Desktop, iOS and Android) - 211718-101- 12 Months Limited Warranty