These type of fish finders are a fully fledged functioning fish finders which helps to perform all the complex tasks that you can think of while indulging in the fishing activity. They come with a plethora of features that can be tracked and controlled through the fully functional digital display present on the controlling module. They even have the capability to support radar data as well as well as fully capable of plotting detailed chart maps of the nearby and distant areas. they also have video as well as other satellite radio functionalities. You can even monitor these types of fish finders from your phone and store all the data in a black box which can be retrieved later on in order to get relevant information. they usually comes expensive and are perfect for both midsized fishermen as well as those who have a very large fishing business. If you can shed few extra bucks from your pocket , surely go buy one because it will definitely improve your fishing experience.