When used properly, EarPeace reduces sound pressure by 75% while maintaining sound quality. Federally required Noise Reduction Rating of 11–17 decibels signifies that 80% of users will get more than 11 decibels of protection and 20% of users will get more than 17 decibels of protection. Range is due to variables like ear canal size and proper adherence to instructions. Each order includes 2 aluminum cases; each case has one set of earplugs plus one extra plug.
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