Hummingbird

Is there anything different about the 1197,997,798 except the screen size? Thanks

Lots of differences!

First of all, the 997 is now discontinued. The replacement model is the 998. You’ll be hard pressed to find any 997’s left on the shelves.

Screen size is one difference.
Processing power is another (more horsepower in the 1197 and the 998 than in the 798).
Transducer and SI frequencies is a third (800 and 455 kHz frequencies and a high-definition SI transducer in the 1197 and 998, 455 kHz only with a standard-definition SI transducer for the 798).