Material ABS shell + soft lining
Noise reduction rate NRR: 26DB, SNR: 31DB
Executive Standard National Standard
Function Sound insulation, noise reduction, noise prevention, mute, etc. Application range Factory workshop, construction site, airport, shooting, etc.
[Use] Concentrate and protect hearing. It is a good helper for you to avoid noise interference in your home bedroom, self-study classroom, travel (vehicles, boats, planes), factories, construction sites, bustling urban areas, etc. It is a good partner for your healthy life and a necessity for you to watch F1 games.