Excellent attenuation level, can be adjusted into the stand off position when not in use. Easy to clip-on, it is compatible with Endurance Helmets and Height Endurance Helmets. Warning: attenuation performances vary depending on the helmet style they are used with. Easy to clip-on, it is compatible with PS53, PS54, PW54, PS55, PW55, PV60, PV64, PV50, PV54, PS51 helmets. Standards EN 352-3 SNR 27dB ANSI S3.19 NRR 24dB AS/NZS 1270 SLC(80) 22dB – Class 4 PW47 – Endurance Clip-On Ear Defenders
