GODIO WIFI intelligent fish finder is a professional fish finder for baitboat.It uses the most advanced sonar technology to detect the water depth, water temperature, topography, fish density and fish size transmit the information back to the phone.Effective distance of signal up to 500 meters, maximum depth of 40 meters, 100-level gain adjustment, multiple mode selection.It will not miss every detail hidden underwater, help the vast number of fishing friends to explore the unknown underwater wo