Although I have a not exactly small corpulence are my wrists comparatively narrow and I had therefore in several clocks cut the bracelets (blank). When the UPHase is not necessary here are numerous openings at small intervals on the tape present; a definite plus, the clock stays securely in place.
With the setting I did myself a little hard, the operating manual will help here not much more, but in the end then succeeded by trial and error. The clock has a lot of functions, who wants to be well served; I really only use the time and date. I further important: It is waterproof, scratch resistant and shock-resistant.
For accuracy: I imagine so far been a deviation of 1 second in 2 days compared to a clock, in this price range I think that is acceptable.
Conclusion: The clock is very comfortable to wear and does what it should.