Stan, I bought that Garmin last year when we decided to move back to Fl. We like it a lot, big enough to see clearly, good functions etc. You can go to "roads" & put an address in, go to "marine" & try & find the home by water, if you can't go back to roads & you can see where the house is vrs your location on the water. We were able to find all the homes we wanted to see in Cape Coral & surrounding areas & the canal system is confusing! Will be going to the Keys in a few weeks & will be able to check other functions. Haven't used in a car yet, but will buy an older truck soon to tow the boat, that's why we got the dual GPS. It comes with a marine mount & harness, car mount & harness, plug in cigarette adapter, & it has a built in re-chargeable battery. VERY happy with the purchase. Roy