Tap the centre knob to change the background pattern. There are 12 dog theme patterns to choose from. Tap on the padlock to unlock and lock 6 tap actions. Tap actions on the date, time, 4, 5, 8 and 9 oclock positions will launch the calendar, timer, Samsung Health or GoogleFit, weather, messages and music apps. Tap actions were tested on a Samsung Galaxy Watch and may not work on other smartwatches. All tap actions can be customized in Watchmaker app in your phone to apply your favourite watch functions.