Five-transducer, tri-frequency, portable wireless fishfinder that hunts fish up to 160' and can be cast or trolled.FishHunter 3D is the most powerful portable fishfinder ever created for Apple and Android phones and tablets. The 3 1/4" diameter, 6.3 ounce (180 gram) sonar floats on the surface of the water, where it tracks water temperature, water depth, bottom contour and fish locations. It can be both cast and trolled behind your boat or placed in your ice hole.Wireless and off the grid: The FishHunter 3D wireless fishfinder sonar connects to your smartphone/tablet via Wi-Fi using a free software app, so you dont need to have a cell tower connection or use your cellular data to use FishHunter 3D. Just you, your smartphone and FishHunter 3D, anywhere, anytime, with no cellular connection required!Save, store and share fishing info: Using the free FishHunter software app, you will also have the ability to access and store critical fishing information like your favorite fishing spots or your catch details, and then to be able to share your information with your friends and other anglers.Key FeaturesWorks anywhere with no cellular connection neededThe world's only portable fishfinder with 72º underwater coverageIncludes five Tri-Frequency transducers supporting 381kHz, 475kHz and 675kHz frequencies, all built into one 3 1/4" diameter floating sonarShallow water mode allows you to get into water that is only 1.4' deep. This mode uses tri-frequency technology to give you detailed information about the bottom terrain to locate the weeds, rocks and drop offsDirectional Casting powers up all five Tri-Frequency transducers, showing you the depth of the water and where the fish are being detected in relation to your floating FishHunterCreate custom 3D Structure Maps of your favorite fishing spots by placing the FishHunter in the water and then reeling/drifting/trolling it over the area you want to measureHow to use FishHunter PROStep 1: Create a bathymetric map of the area:Using bathymetric mapping, troll around your favorite fishing spot to create a contour map so you can find the changes in bottom depthStep 2: Check the bottom structure using 3D Structure Map:Once youve identified where the depth changes are