Instruction: Generate an answer to the question by utilizing the information contained in the document.

Input:
Question: Will this unit work in the great lakes?
Document: Have not had time to use it yet. Have about a 150 or so WP loaded in it . Very easy to use. Looking forward to getting out on the  water this spring. I'm sure it will work great.
It has everything I need in one unit. Fish finder, GPS, Chartplotter, speed and surface temperature. Easy to use and when I get in trouble, just reset.
Great price. Very accurate for my small boat in hawaiian waters. Glad i went with this one. Spent extra $ on fishing gear.
Great price for an entry level fishfinder. Easy to install. Much better than several HumminBird products I've owned in the past.
very easy to set up .it better then I expected for the money
solid solid solid...more data and intel than I will ever use. I have transducers from another product side by side and they are calibrated. The GPS rocks!
bought it mainly for gps and depth finder for my wife's kayak. if you want a small depth finder and aren't using it mainly for a fish finder I'd say get it. if you want to use it mainly for a fish finder and depth/gps secondary, I'd recommend a bigger screen, color and downscan imaging.
Met my expectations. Quality from Lowrance is undeniable. Made another purchase for a friend in fact.Price is way cheaper in my country.
Answer: It works most anywhere you load the correct chart for. For depth, speed, & basic GPS location, it doesn't need any download.