Are the preinstalled maps on the 400i the same as US Inland Lakes g2 Vision charts?
The maps on the 400i are based on the g2 Vision charts however the Oregon does not support the advanced features of these charts such as fish eye view, mariner’s eye view, fishing charts, and auto guidance which makes them roughly equivalent to the maps on the US Inland Lakes DVD when used on the Oregon. The aerial images and DEM for the 300 lakes that have this information are supported on the Oregon. Verify: Text above taken from Colorado FAQ assuming that the Oregon is the same.