what I've found in the past with ray Marine is that their lower price line(<$1000) is usually built by some one else and marketed by them. That transducer looks just like the ones that Lowrance is using(probably made by airmar). The last time I messed with a lower end Ray marine unit was on a customers boat that complained it was blacking out. I checked it out and found that he had it on course up(i run North up) and all the features turned on. Every time he turned the wheel a little, it would rewrite the screen, because he had everything turned on, it took a few seconds for it to rewrite. I turned half the options off and set it to North up and it worked far better, he still didn't like it and replaced it with a garmin. When I was talking to Ray Marine tech service about it, the tech guy told me about them not making it