I can confirm that it's pretty good, but mine often loses track of time and needs to be calibrated via the app. I don't have it constantly connected to my phone, and only connect it ocasionally to sync, so maybe that could be the cause. I've even once had the calibration refuse to work, which required a hard reset of the watch to fix.
It's elegant, and the smartwatch features are unobtrusive, but I wouldn't trust it for any precise tracking, or even time tracking.
I had a fossil hybrid for awhile, and actually rather enjoyed it (gods below it was huge though - 44mm face). The problem was, if it wasn't my daily driver (that is to say, always within communication range of my phone), the battery would drain so fast. And it was a relatively uncommon coin battery, not a rechargeable battery.
I wish that hadn't been the case, but after replacing the battery 3x in one month because I swapped out watches occasionally, it went into retirement.
