Garmin Striker 4 3.5in Color Fishfinder GPS Track PlotterThe Garmin Striker 4 is a compact color fishfinder with built in GPS designed for anglers who want clear sonar, quick position marking, and reliable navigation on the water. Its 3. 5 inch HVGA display and CHIRP sonar deliver crisper targets and better separation, in a small, easy to use package. Display: 3. 5" diag HVGA color display (480 x 320) for bright, readable sonar imaging in all lighting conditions CHIRP sonar: CHIRP (77 200 kHz) with 200 W