For a good catch, the Garmin 320C GPS is all that you need. This Garmin fishfinder can be used for both freshwater and saltwater fishes. The remote waypoint marking feature of this Garmin GPS device lets you send a specific location to your Garmin GPS. The brilliant color screen of the Garmin 320C is sunlight readable that does not fade even in direct sunlight. Weighing just 2.25lbs, this Garmin fishfinder is extremely portable. The dimming technology of this Garmin GPS device adjusts the backlighting to give a perfect night vision too.