SONEX NoiseBuster Electronic Noise Canceling (ENC) Earmuffs provide passive hearing protection with advanced electronic noise cancellation technology. The earmuffs deliver noise reduction across full range of frequencies â€” up to 20 dB of electronic noise cancellation and passive NRR of 26 dB. Worn over or behind the head, NoiseBuster allows critical speech communication to be heard clearly.
illbruck acoustic inc.,
November 1, 2006