GPS accuracy: Accurate in outdoors GPS mode, locating speed also good
Comfort: Comfortable and skin-friendly (previously Huawei watch caused allergic reaction on my wrist)
Battery life: Pretty good - at 50% after a week of use (used GPS for few runs)
Other features: Activity alert actually got me moving more @ the office. I bought this mainly to track runs & heart rate.
Waterproof performance: Haven't tried in water yet, I don't know the waterproof accuracy.

手表续航能力不错，心率测量比较准确，运动的时候佩戴也很舒适。总之五星好评，如果你也是个跑友，强烈推荐你试试这款，性价比很高的一款手表。

GPS & heart rate both work accurately, so far the battery life is really good. Very comfortable to wear, doesn’t feel too big or bulky, can wear anytime.

I wanted a running watch with longer battery life than a day or two, saw the promo & decided to try it out. When I received the watch, it was at 60% battery ( I didn’t charge it then), and after 4 days of use, it’s still at 45%! Gonna put it to the test and see how long it lasts after fully charging… Watch seems very durable and overall liking it so far! Recommend for anyone needing a more affordable GPS watch with amazing battery life.