just testing the water, up for grab's is my tomtom rider 400,i've upgraded to the tomtom rider 550,there is nothing wrong with this, it'll come fully reset, this is a new replacement under warranty as the other one was affected when rain hit the screen, this one is ok,i've tested it several time's, i have the purchase receipt and the paperwork saying the original couldn't be fixed so they sent me this tested replacement.i have just updated the map's and speed cam's on this, so it's ready to a good home.serial no KD3336Y00085,i paid £270 for it's how does,£200 posted sound, the wiring & fitting kit is new,it was never fitted as it's the same was already fitted to the bike,it's in as new condition,ALSO ADVERTISED ELSEWHERE.