I have used this unit twice and have been very happy with it. I felt like the depth and temps were accurate. It alerts me when fish pass through and even tells me the depth of the fish. Still getting used to reading the bottom and sensitivity, but I'm sure I will get used to it. I use it on a canoe with gentle paddling. I take it out if the water if I need to move fast, it feels like it will pop out of the holder.,it won't but it seems to put strain on the unit. I recommend the best batteries you can get. I put in some cheap ones and they drained after 8 hours. I got some top quality batteries, so they will last longer. I'm very happy with this purchase, especially the low price. I have an even cheaper depth finder but this hummingbird is perfect for me
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