Bought it mainly for mountain biking: Bin last drove for me uncharted territory and have the track in advance clicked together me in MapSource. Then I got while driving through the Vista really known all along where I have to go now. 2 times I would have me proceed without the Navi, the part you realize actually immediately if you've just missed a turn. The display is by the color display and the available brightness (me enough 30%) almost always easy to read, even in direct sunlight placed me orange glasses. Free maps are available on openmtbmap.org: eg the east contour map based on the Open Street Map (instructions how to get into the MapSource there enough there). As an accessory, I never imagined the bicycle clamp Oversized, a 4GB SDHC card, a few 2900mAh battery and a screen protector (scratches verschlechter especially in direct sunlight due to reflections readability) concerned.