The three circles in yellow, red and blue replace the usual watch hands. Tap actions at 3 and 9 oclock positions launch the messages and timer apps respectively. Tap actions on the date and battery icon launch the calendar and Google Fit or Samsung Health apps respectively. Tap actions were tested on a Samsung Galaxy watch and may not work on other smartwatches. If the tap actions do not work for your watch or you prefer the shortcuts to link to other apps, you can customize them in Watchmaker app to suit your watch.