Use to work great! But every time it comes on a alarm sounds. Not sure what is going on with the unit I worked flawless for many years. Maybe you can figure it out as I can't. The hydraulic pump and the linear feed back unit is not included so you know as I am up grading a a Simrad AP-44. I have it listed on CL for 400.00 BD pricing 350.00 Email me with any questions. Unit is pretty clean for all the years I had it. Cradle for the hand held unit is included but did not take a picture email me at [email protected] or send me a pm. Also included will be 6 USS Midway tickets value at 26 bones each!