The iBobber is a smart fishing tool that uses sonar

iBobber Wireless Bluetooth Smart Fish Finder for iOS and Android Devices & Joto

Discover Fish Easily with iBobber - The Smart Fish Finder

ReelSonar - The iBobber wireless sonar fish finder fishing tool

ReelSonar iBobber Kraken Bluetooth Smart Castable Fishfinder for sale online

ReelSonar - The iBobber wireless sonar fish finder fishing tool

Buy ReelSonar iBobber Kraken Wireless Bluetooth Smart Fish Finder, Bluetooth Scale/Tape Measure, Fish Lip Gripper, Blue & Zonoz 11-in-1 Mini Pocket Multi-Z-Tool (Bundle) Online at desertcartTunisia

iBobber + iPhone = The one that didn't get away - The Gadgeteer

Fish Finder Wireless Android, Fish Finder Attractor

Does anyone use any type of sonar like this one while bank fishing? : r/bassfishing

Discover Fish Easily with iBobber - The Smart Fish Finder