This is a simple and effective sonar that is very expensive. I bought this to use with my inflatable boat on a recent camping trip. To install, I attached the transducer to the bottom of the trolling motor with (2) 3" hose clamps and secured the wire with wire ties. The device operates on (4) AAA alkaline batteries. I've tried rechargeable batteries, but they don't provide enough power for the device to work properly. With alkaline batteries, the device works for about 9 hours without any signs of battery degradation. In terms of function, the device is very easy to use and accurate. I tested it in parallel. compared to the sonar on my larger boat and it was accurate. It shows the depth in the upper right corner of the screen and shows the approximate location of the fish depth. These two pieces of information are enough to tell you how deep you need to fish and where to go so you don't get caught. In 3 days of fishing we haven't lost a bait. All in all, for $40 this is a great tool and very useful for fishing. The buoy also makes it easy to use on a dock, paddle board or kayak. I would definitely recommend this product with the understanding that simplicity and value make it amazing.
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