For the money, this is a great depth finder with the responsiveness to allow you to cruise the channel and be wary of the shoals. The map tool is easy to use and it even spotted fish for me. What more could I ask? Well, maybe that it included a weather head. It is waterproof but should be covered for storage, just to keep the sun off. It is also very easy to remove, so that isn't as big a problem as it might be. Good buy, It was a recommended model from my dealer which he could no longer carry under his contract. I was glad to have found it on amazon.