Radians 430-EHP electronic earmuffs provide good noise insulation in dangerously loud hearing environments. The microphone picks up and amplifies low level noises. When sounds levels exceed 86dB, the electronic circuit automatically protects at a safe level in accordance to Noise Reduction Rate NRR of 27. Normal hearing is restored below 86dB. The 430-EHP have been tested with the guidelines in accordance with ANSI S3.19-1974. The earmuffs feature one directional microphone with an on/off plus volume control, a padded headband and padded earcups for comfort during extended use. They also have 200 hours of battery life when used correctly.
