The PowerSeeker FishFinder is a detachable, round sonar that can be used together with the PowerRay and PowerDolphin or as a stand-alone device.
It provides you with information about the underwater space, including depth, fish distribution, and underwater temperature. The sonar can detect fish and underwater landscapes up to 131 feet below the surface, and sends real-time data to the app. The app will show the sonar detecting results. Based on that, you can determine where all the fishes are located and how deep they are.
It also has a fish lure lamp which can be turned on and off by the app.