Also, I was told by the guy at Sportsman's that, by far, Humminbirds were returned most often due to defectiveness. He even went to far as to tell me that he had pulled several out for display models that failed to function. If you think about how seldom display models are put up that's really a terrible sign. He also said that even ones which worked had bad seals that would allow the screen to develop condensation, terminals would become corroded etc.. Very poorly made in his opinion.