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What is the NRR (Noise Reduction Rating)?
Similar to sun tan lotion’s SPF or Sun Protection Factor, the NRR tells
you how many decibels you can expect the products to reduce (when
wearing the product properly). For example, let’s say that you are
attending a concert where the sound is 120 decibels. When you wear our
HEAROS disposable foam product with a NRR of 30 dB, you can expect the
sound level entering your ear to be 90 dB (120-30=90). |
