"Echo 300c is designed to make catching fish a cinch. It’s just that simple. The system’s 3.5 in sunlight-readable display and exclusive Garmin HD-ID™ target tracking technology let you see through the water like never before. Plus, a 300-watt (RMS) sounder offers a viewing angle of up to 120 degrees and bottom detail to 1,500 ft.

For an uninterrupted view of the sonar image, echo 300c also boasts Garmin Smooth Scaling™ technology, which means you won’t lose sight of the sonar history as the unit changes depth ranges."

Used, head piece only - no transducer, no cable, no mount. It is used and does show wear but in good working condition. I took several pictures to show details. This was taken off a boat that was upgraded with a more newer system. 

I only do shipping in the USA. Thank you for looking and please look at my other items for sale. Any questions please email me.