Final answer:
All listed options are common features of smartwatches except making phone calls, which is not a universal function. Fitness tracking, heart rate monitoring, and music streaming are standard features. Phone calls require either an LTE/Cellular connection or smartphone pairing.
Step-by-step explanation:
The subject of the question is smartwatch features. These wearable devices come with various capabilities. Among the options listed, all are typical features of smartwatches except for making phone calls. While some smartwatches do allow for phone calls, it is not a universal feature like fitness tracking, heart rate monitoring, and music streaming. To make phone calls, a smartwatch either needs to have an LTE/Cellular connection or be paired with a smartphone. On the other hand, fitness tracking and heart rate monitoring are core health-related functionalities, and music streaming can often be done through a connection to a smartphone or by downloading music directly to the watch if it has internal storage.