I am selling my Lowrance LCX-20C since I've upgraded. It has a GPS with a Hot Spots contour lake map card. The unit works great, in fact the map uploads faster the the newer units so when you zoom in or out it shows the bottom contour lines immediately. It comes with the external antenna and the power wire is set up for a lighter or power plug in so it is easily removable to lock up. It will come with a swivel mount and an extra brand new transducer.
As a bonus I have not deleted all the brush piles that I have found on Clinton Lake, that's worth more than the sonar asking price of $350 for the complete system.
The screen is flawless as is the entire system.
Along with the lake maps I installed all the the streets for the central united states so you can input an address and it will show you how to get there, just like a GPS does now. I used it for years as my way to locate customers houses before GPSes became affordable.
I'm only asking $350 for everything. This would be a great uniit for someone that is just getting into boating/fishing without spending hundreds for a quality sonar with GPS mapping