At home or in the office, the PC 21-II headset has been specially designed for easy internet-based phoning. Its single-sided wearing style lets you enjoy the conversation while being in touch with what’s going on around you. And the lightweight, adjustable headband is comfortable to wear all day long. 

So you can be sure that you are clearly heard, the PC 21-II has an improved noise canceling microphone. It reduces background noise, to give you great voice quality, and is highly sensitive too, making it perfect for when you want to use speech recognition applications. Just adjust its flexible boom arm. Move it up/down or forward/back to position it where it needs to be.


  • Sennheiser sound – a quality speaker delivers great acoustic performance, so you’ll always hear what’s being said
  • Noise canceling clarity – the microphone filters out ambient noise, so your voice is always clear and easy to understand
  • Reliable speech recognition – the microphone is specially designed for your device’s speech recognition function
  • Keep one ear free – the single-sided design keeps you in touch with your surroundings while you talk over the net
  • Fully flexible boom arm – adjust the microphone for optimal voice pick-up and comfort
  • Light and comfortable – with the lightweight headband, it’s easy to forget you are even wearing a headset
  • Peace of mind – thanks to the 2-year international warranty

Delivery Includes

  • PC 21-II headset
Wearing style Single-sided headband
Cable length 3 m
Connector 2 x 3.5mm
Weight 60 g
Frequency response (headphones) 40 - 18,000 Hz
Impedance 32Ω
Sound pressure level (SPL) 109dB (at 1mW, 1kHz)
Frequency response (microphone) 80 - 15,000 Hz
Pick-up pattern Noise canceling
Sensitivity as per 121 TR 9-5 -38dBV/Pa

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