In the past couple of years, we have covered plenty of cool app-enabled fish finders here. FishHunter Directional 3D is another portable fish finder that lets you find and catch fish like a pro. It allows you to see the bottom contour up to 160 feet below. The device maps your favorite fishing spots and lets you know where to cast.
FishHunter can also be used for ice fishing since it works in weather conditions as cold as -30C. It has 5 tri-frequency transducer and comes with a 10-hour battery life.[where to get it]