I like all the features of the vivosmart5 and the accompanying app. The one problem I have is with the Heart Rate display. Being an 80-year-old, I would like to be able to see a new clock face that only displays the "Heart Rate" as I exercise. Adding an optional Clock Face with a small heart icon along with the current Heart Rate displayed with a large font would solve that problem. Time and date are not important while I exercise, but my Heart Rate is. Adding another clock face option would make this an ideal fitness tracker for those who need reading glasses. I am sure others would like this new clock face.