Description Suitable for environments with a medium to high level of noise The best choice in high-frequency noise situations Smooth telescopic size regulation Non-conductive Conforms to EN352 Clips straight into the Zenith helmets without an adapter Requires bayonet adapter for the plasma helmet (sold separately) SNR rating dependent on helmet combination: Plasma, HP, Superplasma – SNR 29 Zenith – SNR 28
