Effectively perceives and ocalizes weak sounds at the same time be prtected against loud sounds 5 times enhance weak sounds lower than 50db Cut off immediately when exceeding 82db Stainless steel strip and abs cups offers long use Padded ear cushion provides all day wear Low total weight provides unique comfort features Compact design to save the capacity with foldable feature for easy storage and take away Nrr21db tested with ce approved Clam shell inner carton outer 12pcs/ctn 24pcs/ctn
