... Report + Excellent for hearing protection + OEM available + Hearing Protection NHP-110S Folding, Portable Electronic Haring Protection NRR: 20-25 dBNoise Reduction ... sound sensitivity control system is only 2 milliseconds.AMPLIFICATION: NHP-110S Amplify the quietest sounds from 80 to 85 dB, ... box and bag.Hope our products make you satisfied! NHP-110S Folding, Portable Electronic Hearing Protection