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Black single-ear on-ear headset with inline controls and USB-C plus USB-A adapter

Poly Blackwire 3210 USB-C with USB-A Adapter Monaural Headset

SKU CH-1GW5-TNT9A

Monaural on-ear headset with noise-cancelling microphone, USB-C and USB-A connectivity, inline call controls and dynamic EQ for voice and music

  • Frequency range20 Hz-10 kHz
  • Headphone styleOn Ear
  • Impedance32 ohms
  • Signal-to-noise ratio10 decibels
  • Audio sensitivity10 decibels
  • ConnectionUSB
  • Connect via USB-C or USB-A with included adapter
  • Noise-cancelling microphone filters background sound for clearer calls
  • Dynamic EQ tunes voice quality and music playback automatically
  • Inline controls handle answer, mute and volume adjustments
  • Lightweight 97 g metal headband with single-ear fit

Single-ear wired headset for calls

The Poly Blackwire 3210 is a monaural on-ear headset designed for professionals who spend long hours on voice and video calls. Weighing 97 grams with a lightweight metal headband, it keeps one ear free for office awareness while a noise-canceling microphone filters background sound. Inline controls handle answer, end, mute and volume without reaching for the keyboard.

Upgrade from basic earbuds or built-in audio

Moving up from smartphone earbuds or a laptop microphone gives clearer voice pickup thanks to the 80 Hz to 10 KHz microphone response and 32 ohm driver impedance. The jump is worth it when daily meetings demand reliable mute control and consistent audio levels across Microsoft Teams, Zoom and other platforms.

USB-C with USB-A adapter for any PC or Mac

The headset connects through a USB-C plug and ships with a USB-C to USB-A adapter, so it works on modern and legacy ports alike. No driver installation is required and the inline remote draws power directly from the host, leaving no need for batteries or a separate sound card.

How it compares

Measured against everything we stock in Earbuds & Over-Ear Headphones, at today’s prices. Recalculated every night.

Price $37.99
Pricier than about 63% of the 7,078 comparable items (median $25.99).

Specifications

Product
Brand namePLT
Product line3210
Model nameBlackwire 3210 USB-C with USB-C to USB-A Adapter, 9P7 × 7AA
Part number9P7 × 7AA
Product typeOn-Ear
Product colorBlack
Audio & video
Frequency range20 Hz-10 kHz
Headphone styleOn Ear
Impedance32 ohms
Signal-to-noise ratio10 decibels
Audio sensitivity10 decibels
Wearing styleOn ear
Noise cancellationNone
Mic impedance~3K ohm
Mic frequency response80 Hz-10 kHz
Mic signal-to-noise ratio10 decibels
Mic sensitivity10 decibels
Ports & slots
ConnectionUSB
Size & build
Product weight97 g

Questions about this item

Does the 97-gram headset clamp tightly enough for a secure on-ear fit?

The lightweight metal headband is adjustable and designed to provide a comfortable custom fit that stays secure during calls.

How do I plug the USB-C headset into a laptop that only has USB-A ports?

Use the included USB-C to USB-A adapter; connect the headset cable to the adapter, then insert the adapter into the USB-A port.

When should I replace the ear cushion on this monaural headset?

Replace the cushion when it shows visible wear, loses elasticity, or no longer seals against the ear for clear audio.

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