I own Steel HR watch for some time now. The pulse meter is disappointement, but it does not work properly on some other brands too. The watch appear somewhat cheap. I would gladly pay a lot more for a better looking watch.
There are things you can improve for people who use reading glasses:
1) Watch is difficult to read in low light. Hands are too tiny.
2) Messages are great, but letters are too small.
I hope you will improve design soon. Other than that, great work!