Easy on the eyes

It is not that I am that old. I mean 70 is the new 50 is it not? But, some of the portable fish finders may work pretty good but I have difficulty viewing their screens. The people from Lowrance fish finder must have had me in mind when they came out with their large screen sonar/gps chartplotter combos models. The 10.4 inch scree with a resolution of 600v x 800h made it almost as if I was watching television. First my daughter stated buying me large print books to read and now my son buys me a large screen fish finder. Are they trying to tell me something.