for example the possibility to receive a specific training plan for running based on a simple AI. every 300 bucks huawei Watch does that. you tell it your aim (distance, time) and what your goal is either just a weekly fitness routine or to improve and train for a marathon or whatever and it catches some data from your first runs to calculate a plan with training and rest days you can absolve to reach that goal in a chosen time. how difficult can that be...