SPA3 earmuffs. ABS headband, adjustable in height. Polystyrene + synthetic foam cups. Weight: 158 gr. SNR: 23 dB.
Certification:
EN352-1 Hearing protection : Ear-muff
SNR 23 dB Standard noise reduction
H 24 High frequency attenuation
M 20 Medium frequency attenuation
L 13 Low frequency attenuation