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Hi I'm interested of a cobra radar/laser detector the 9830 or 9930>? type are they any good=? do they protect you against the cops with radar or laser guns? are they all reliable=? do they work on permanent cameras who are in boxes near the road also upgraded with gps coordinates for future camera positions.

would they work in europe (sweden) or is it only US?

are they easy to install in your car=?

are they made of good quality?

I'll be happy if u let me know cuz i really want one.thanks