'For daytime fair Weather Runners Only!!!!. Sent mine back and got a 305 instead.'
Strengths: Comfortable to wear Good backlight
Weaknesses: Touch Bevel Fails in rain. Wi-fi connectivity initially requires a lot of persistance to get to work No Map screen.
Overall: Very dissapointed.
Have used the 305 in the past (Garmin rep at VLM 2012 expo said it was a direct replacement -its not) Touch Bevel does not work in the rain. During a race it just continually beeped and flickered through the screens. You can lock the bevel to stop it doing this but be warned:- If like me you do not have 20:20 vision its very difficult to tell which screen is been shown during autoscroll. While locked you cannot use the backlight making training on rainy a night a no-no.
Another problem was at the start of a race moments after i had established satellites it decided to go into power save mode at the same time the race started. I pressed the start button but it still continued to go into powersave mode. I had to press stop and start again and then it started to look for satellites again. Because I was now running it coundn't find them until I was 1 mile into the race!! The data from the watch was useless. I know that you can switch off powersave but surely the defualt should be OFF
Wifi -Poor idea With the 305 you connect by the usb/cradle this means that you can download your data at the same time as charge your watch seems sensible. With the 405 it took a couple of install attempts before I got it to talk to my PC. Then I have to plug it in the charger.
I have serious questions about this watch in terms of design and would stay clear of it if you are serious about running/training.