First off let me explain that the 645 is only my 2nd running watch so I’ve not got a lot to compare it to but my previous 235 had very flaws that I noticed. Yes it lacked some features and looks which led me to the 645 but for my basic needs I couldn’t really fault it. I think in the year I had it I only remember once having some obvious gps errors.
Now on to the 645. I must admit I’m not one to test things in as much detail as some on here but day to day using the watch and analysing post run data I never expected to have so many issues from what should be Garmins premium run only watch. Firstly live pace, while I understand it will never be 100% too frequently it’s completely out, today for example on two occasions it had my pace anywhere between 10:00-15:00kpm yet I know I was around 5:05-5:15 those type of things aren’t a one either doing 6 runs most weeks I would say it happens in at least 3 of those each week.
The altimeter has been discussed numerous times on here I see so I won’t moan on for too long but you can guarantee any time I run hill repeats or a particularly undulating course I will need to auto correct the data post run. It could very well be off on my flatter runs as well I just don’t particularly look into the plot to check on those.
My final annoyance is the constant bugginess of the watch in general. While this doesn’t affect my data which is important it’s the icing on the cake of why I hate this thing. First I had an issue where it would crash any time I tired to start a planned workout and I’d have to reset until it worked then when that was fixed and things seemed ok for a while we now have the issue which according to these forums at least is affecting a lot of people where after saving a run the watch freezes and has to be restarted again.
Sorry I know I’ve not really added anything constructive here and mostly just gone over old ground which I’ve seen covered numerous times but I felt the need to get it off my chest and just see if others hate this watch as much as I do?
Right now I’m not really in a position to just go out and get a new watch and when I am I will probably end up going down the Garmin route again as I think on the whole they make good products but the 645 to me at least and maybe others was a failure.