Users can hear ambient noises: conversations, machine noises… At the same time, sudden noises at harmful levels are immediately attenuated.
Compatible with hard hats.


  • Rail
  • Nuclear
  • BTP
  • Industry

Hearing protection

Hearing protection and clear communication for high-noise areas


High-attenuation shells with optimized acoustic design


Plenty of ear room for long-lasting comfort


Flexible sealing rings filled with foam and liquid

Noisy environment

Excellent sound reproduction, even in very noisy environments

Construction helmet

Suitable for use with hard hats


Volume-Actif function: adjustable ambient noise


The neckband ensures the stability of the earmuffs

Noise cancelling

Noise-canceling directional microphone

Technical specifications

  • Hearing protection style: anti-noise
  • Type of hearing protection: headband
    Active listening to the environment and soft noises: Yes (amplifies soft sounds, attenuates loud noises)
  • Microphone: dynamic
  • Voice-guided menu system
    Balance function, equalizer, adjustable trigger time
  • Last setting saved on power-down
  • Battery life: approx. 1000 h
  • Weight: 435g
    Attenuation value (RNR): 94 to 105 dB
  • SNR: 31 dB
  • Automatic switch-off after two hours if no function is activated
  • Low-battery warning signal, before switching off the device
  • Twisted connection cable with GUARDIAN connector