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The Sonic II Ear valves are a diaphragm-type sound filter.

The Sonic II ear valves:
Protects against impulse noise
Allows passage of normal sounds
Eliminates "plugged up" feeling

The Sonic II ear valves have a patented design which incorporates a unique complex acoustical passageway with a sensing diaphragm that moves to absorb and reduce the energy from high impulse noises.

These hearing protectors contain a valve which allows normal hearing, but closes on high noise levels. Noise reduction rating 6.0 decibels.

Sonic Ear Valves fit inside the ear and unlike passive ear defenders they do not exclude sounds such as conversation, they reduce high level noises. Compact and convenient.