I wanted to like this warch but it has too many problems during its first week of use:
1) Power drains very quickly, even when I use recommended settings to extend the battery life. Only 2 gps dependent activities per day and I barely make it to day 3.
2) Two activities (hike and walk) crashed the watch when I hit start. The watch displays big font numbers and vibrates continuously until I hit stop. No data is recorded. No response from Garmin on this issue.
3) I updated maps and lost all details in my maps. No matter what map setting changes I make, I can't get more details than major streets or roads in my area.
I've decided to keep using my reliable old 255, which has only had one serious problem in over 2 years.