Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Norcross Hawkeye hand held sonar

I have a small sailboat without any power on board so this hand held unit is perfect for my application. The depth is very easy to read and the unit is easy to use. It does have to be in contact with the water (I have not tried the through hull reading) but on my boat that is not a problem. The unit is larger than I thought it would be but I think that this will be an advantage as it would fit perfectly in a cup holder for easy access. The water temp is also a nice feature. It uses 4 AA batteries in a nice holder for easy loading. It is well built and I look forward to many years of use.