Earmuff Headband 23DB | Dynamic

Lightweight and economic Dielectric Easy to adjust Adjustable height Great value Lightweight NP110 - Classe B - NNR: 24dB Frequency Hz 125 250 500 1000 2000 3150 4000 6300 8000 Mean Attenuation dB 8.7 18.4 30.7 51.7 42.4 39.8 40.7 39.5 38.7 Standard Deviation dB 0.4 0.7 0.2 0.5 0.9 0.5 3.7 1.8 1.4