We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Monaural on-ear headset in matte black with adjustable metal headband, boom microphone and inline USB-C control module

Poly Blackwire 3210 USB-C Wired Headset 209748-333

SKU CH-76BV-JSFDC

Single-ear wired headset with active noise-cancelling microphone, USB-C or USB-A connection, inline call controls and lightweight metal headband

  • TypeOn-Ear
  • ColorBlack
  • THDOn Ear
  • ConnectorUSB
  • Ear Couplingover_ear
  • Weight0.141 kilograms
  • Connect to PC or Mac using USB-C or the included USB-A adapter
  • Noise-cancelling microphone reduces background sound for clearer calls
  • Dynamic EQ optimises voice quality on calls and adjusts for music playback
  • Inline controls let you answer, mute and adjust volume instantly
  • Lightweight metal headband provides a secure, comfortable single-ear fit

Single-ear headset for hybrid workers

The Poly Blackwire 3210 is a wired on-ear headset built for professionals who spend long hours on calls. Its monaural design keeps one ear open to the surrounding office while the noise-cancelling microphone filters background sound. A lightweight metal headband provides a secure, adjustable fit for all-day wear. The headset weighs 0.141 kilograms.

USB-C connection with USB-A adapter

Connectivity is handled through a fixed USB-C cable and an included USB-C to USB-A adapter, letting the headset plug into modern and legacy ports alike. Inline controls on the cable give immediate access to answer, end, mute and volume functions without reaching for software. The retractable microphone boom swings up when not in use, reducing clutter on the desk.

Wired USB audio limits mobility

Because the headset draws power and audio over a single USB link, the user remains tethered to the host computer. The cable length defines the working radius, so the device suits desk-bound roles rather than users who need to move around during meetings. Active noise cancellation on the microphone requires the USB connection to function.

Highlights

  • Connect to PC or Mac using USB-C or the included USB-A adapter
  • Noise-cancelling microphone reduces background sound for clearer calls
  • Dynamic EQ optimises voice quality on calls and adjusts for music playback
  • Inline controls let you answer, mute and adjust volume instantly
  • Lightweight metal headband provides a secure, comfortable single-ear fit

Specifications

BrandPOLYCOM
ModelPoly Blackwire 3210 USB-C Wired Headset, 2-209748-333
Part Number2-209748-333
TypeOn-Ear
ColorBlack
THDOn Ear
ConnectorUSB
Ear Couplingover_ear
Weight0.141 kilograms
Noise CancellingActive
Featuresactive_noise_cancellation, 5, Retractable, Volume Control, touch, Wired, On Ear, dynamic_driver

Questions about this item

What does the USB-C connection with the included USB-A adapter cap in practice?

The headset connects to PC or Mac via USB-C and the supplied USB-C to USB-A adapter, providing a wired digital audio link for calls and music playback.

What does the lightweight metal headband need to fit securely on one ear?

The adjustable metal headband and single-ear (monaural) design let you position the on-ear cup on either side while keeping the other ear open.

How is the headset set up, and which step do users often miss?

Plug the USB-C connector directly or through the included USB-A adapter, then select the Blackwire 3210 as the audio device in Zoom, Teams or your OS sound settings.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.