Ours is a couple of years old so the 255 is probably an upgraded version of the nuvi 200.
Let me give you a tiny piece of advice too...don't ever leave the Garmin or any part of it in your car. We left the cradle attached to the dash one night and our truck got broke into...they knew we had a Garmin...they ransacked our truck and took it. Yah, I know...I should have taken it inside but I just didn't think about it that night. Anyway, the police didn't think it was enough to look into and the pawn shops swore they didn't take them in because they knew most of them were stolen...gee...I wonder where all the GPS in their cases came from then

Oh yah...maybe they bought them on eBay