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
• Available in a variety of colors
• Supplied with matching cord and case
• Cost: $32.00/pair - Buy Online

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