 ER-20 Ultra-Tech Earplugs
The ER-20 Ultra-Tech earplugs have the same acoustic properties and the same construction as the ER-20 Hi-Fi earplugs. The only difference is their color and a retaining cord for convenience.
- Low cost
- 20dB attenuation
- Music is heard clearly
- Good frequency response accuracy
- Supplied with matching cord and case
The ER-20s are DIFFERENT than conventional earplugs. They actually reduce the dangerous sound level evenly (using a tuned resonator and acoustic resistor) to preserve the balance. You still hear the blend clearly, "feel" the bass, and are able to distinguish each tone.
Here is a list of several people who benefit from the ER-20 earplugs...
- Aircraft - crews, passengers, pilots
- Athletics - athletes, coaches, spectators
- Construction - carpenters, equipment operators, steel workers
- Emergency Vehicles - EMT's, highway patrol, firefighters
- Industrial - factory workers, students, supervisors
- Leisure - concerts, night clubs, noisy restaurants, sporting events
- Medical - Dental - dentists, hygienists, technicians, surgeons
- Drivers of - heavy equipment, motorcycles, race cars, pit crews
- Musicians - vocalists, musicians, directors
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