Review on Portable WiFi Fish Finder with GPS for Kayaks, Boats, and Ice Fishing - Deeper PRO+ Smart Sonar for Deeper Insights by Jeet Anand ᠌

Prices are not cheap both for the device itself and for accessories. Has pros: Shows the bottom relief at speeds up to 5km/h approximately, shows fish, no need to use wires and batteries. An interesting application with maps on which you can track fishing routes and "cool places" Different cons: The proprietary mount for the boat turned out to be fixed only on the transom, the side is not long enough, because the high side balloon. We used two phones to communicate with the echo sounder, android without any complaints, did not remember the fishing route on the iPhone, offline maps were erased when exiting the application, not all application functions are active at the moment, while everything works on the android.