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Etymotic ER 20 High Fidelity Earplugs Hearing Sound Amplifier by Etymotic
P>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.

The BEAN® Quiet Sound Amplifier makes your world one click louder.
The BEAN provides people who need occasional hearing amplified with an affordable do-it-yourself solution similar to reading glasses.