I wish I could give 4.5 stars. This generally works pretty well and was by far the best option I found for $200. It has struggled with distance when it “auto starts” an activity, and Garmin customer service walked me through reloading it. I wouldn’t read too far into the “stats” that require more interpretation such as VO2max. But it works for time and distance and also gives cadence and heart rate; the last two are mostly accurate. Garmin Coach’s “5K with a time goal” program seems to be in its very early stages and I expect it will improve. I also am small-boned (size 4.25 wedding ring on the ipsilateral 4th finger to the watch) with a small wrist, and it works for me. If I had a larger wrist, I might have purchased the 935, but it was just too big for me, and I could not justify a Fenix 5s.
I love this watch and all it's functions, however, the heart rate is grossly inaccurate sometimes, and no matter what I do, I cannot get the heart rate to read accurately. It's not every time I use it, but I'd say at least half of the time the heart rate will read 40-50 BPM lower than what I know my heart rate is (I'm an athlete). I try taking off the watch, switching wrists, drying it off from sweat, restarting workouts to no avail. I'm hoping to contact Garmin and get this resolved.