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Etymotic research er-20 earplugs
Ready-Fit EarplugsER 20 with Case ETY Plugs (ER 20 High Fidelity Earplugs) were developed to provide low-cost, one-size-fits-most high fidelity earplugs that can be used in a variety of noisy environments.
* Replicates the ear's natural response
* Speech is clear, not muffled
* Reduces approximately 20 dB at all frequencies
* Sound quality is preserved
