Thank you very much friend, I wish I could opt for a Zeiss, but those viewers are very expensive, would lead me to spend my two incomes in a viewer and then my wife hehe sure kills. For now I'll leave someday Pentaflex and if I'm lucky and I win the lottery I will seek a good telescopic sight. And thanks for your good wishes for my son, he is happy at the moment, he has five years and heard very little today with their hearing aids has greatly improved. We hope that hearing loss does not continue to rise and that can defend on headphones. Regards, Oscar.