I just replaced my Lowrance X96 transducer. Lasted 3 years. Started to lose bottom when over 30 ft. Buddy bought the same X96 and his transducer is starting to lose bottom after 2 yrs. I wouldn't recommend the Lowrance due to their transducer problems, and poor reliability. I think the Eagle Fishmark 320 & 480 use the same transducers as the Lowrance.