Quick overview from the supplier:
Poly Blackwire 3315 Mono USB-С Headset, 3.5 mm, Microphone noise-canceling, SoundGuard, DSP, Receive output from 80 Hz–20 kHz, Microphone 100 Hz–10 kHz, Call answer/ignore/end/hold, redial, mute, volume +/-, CABLE LENGTH 215cm, 102g
