Keep away from infants. This product is non-toxic but may interfere with breathing if caught in windpipe. Tested according ANSI Specs S3.19-1974. (See chart) The level of noise entering a person's ear, when hearing protection is worn as directed, is closely approximated by the difference between the A-weighted environmental noise level and the NRR.
Example: 1. The environmental noise level as measured at the ear is 92 dB(A). 2.The NRR is 32 decibels (dB). 3. The level of noise entering the ear is approximately equal to 60 dB (A).
CAUTION: For noise environments dominated by frequencies below 500 Hz, the C-weighted environmental noise level should be used. Improper fit of this device will reduce its effectiveness in attenuating noise. Consult the above instructions for proper fit. Although hearing protectors can be recommended for protection against the harmful effects of impulsive noise, the Noise Reduction Rating (NRR) is based on the attenuation of continuous noise such as gunfire. The Noise Reduction Rating (NRR) calculated from the attenuation data is 32dB. Earplugs must be properly fitted to attenuate noise effectively. Refer to instructions.