I don't think it is only the watch, but in the past few weeks, my wife has cut her 5K time by almost two minutes. She is able to keep better track of her pace when she is training by using the chronograph and seeing if she is on time for her one and two mile marks.
We were hoping she would be able to read the large numbers without her reading glasses. In the right light she can; otherwise she still needs them and has sunglasses with readers in them for running. It is easy to read and she likes the Indigo light.
The watch is sturdy and looks nice. The pink helps give it a little touch of femininity.