I bought an Falk F10 and to protect these, equal to the bag with it. So the bag fulfills the purpose of protecting well, contributes to little and you can load the navigation part, without taking it out of his pocket. I would have thought that you can use the Navigator in your pocket, unless he is on foot. Unfortunately, that's not - it's just a protective case. And when inserting the F10 in the pocket, you have to be extremely careful that you are not pressing the ON button of the Navigator. Because of these two negative points, only three stars