With the RT-9 2.0 you get more than just a flasher. Instead, you get an entire ice fishing system complete with sonar, mapping, recording, dual flasher capabilities and more. Combine these features with unlimited flexibility, and you have the ultimate system for the ice. In fact, it has such a vast amount of features that we put together a list of the 5 things that you probably didn’t even realize you can do with the RT-9 2.0.