After fifteen days of use, the GPS satisfies me completely. It is of adequate size for a bike use, as it is sufficiently large without being bulky. The user can easily choose the number and the type of information they wish to see on the screen. The course profile s poster transparency indicating the level reached course. After the first start, the update via the brand's software allows for relatively recent cards. These cards are not IGN, but OSM maps to the specific format of the brand Teasi.Pour use my (cycling), they prove a satisfactory accuracy. Not knowing the quality of your maps, I can not make a comparison on this point. The import of gpx files is easy. The recording of his own journey is actually easy. The fixation on the hanger is practical and robust. The readability and responsiveness of the touchscreen did not ask me any trouble even in clear weather. The GPS recalculates the route fairly quickly and announced by a beep (for me will hear) any deviation from the programmed path. He announced that same tone, crossroads and future changes in direction. For now, it does very well gps everything he's supposed to do. Only drawback, I have not been able to test his reaction to rain but it is classified IPx5 therefore normally resistant to water jets. In conclusion, I will say that its price / quality ratio is excellent. He would miss just one more leading software to exploit the journeys made and recorded data. This would be the icing on an already delicious cake!