Signal noise ratio(SNR): 29dB Noise reduction rating (NRR): 22dB Conforms to EN 352-2: 2020 and ANSI 3.19-1974 100% New PP impact-resistant shell body, Unique design for easy personalized fit adjustment Suitable for loud machinery,lawn movers,enginee
Signal noise ratio(SNR): 29dB Noise reduction rating (NRR): 22dB Conforms to EN 352-2: 2020 and ANSI 3.19-1974 100% New PP impact-resistant shell body, Unique design for easy personalized fit adjustment Suitable for loud machinery,lawn movers,engineer, industrial machines power tools,loud music,noise places Packed by poly bag