FishHunter Directional 3D Wireless, Portable Fish Finder 5 powerful tri-frequency transducers (381kHz, 475kHz, 675kHz) to give you ultra high resolution and 5 times the coverage area than any other wireless portable fish finder available. The ONLY 3D wireless sonar available with 5 incredible sonar view options: bathymetric (contour) mapping, 3D fishing, 3D structure mapping, directional casting and ice fishing flasher view. Depth range of up to 160ft and ice fishing depth of up to 100ft. Compatibility:+9000 iOS Apple & Android Smartphones or Tablets with GPS Built in Wi-Fi connectivity with a range of up to 150ft and does not require cell phone tower reception. Can be cast from a boat, kayak, canoe, used from shore or trolled up to 2MPH.