I've had 2 Apple Watches--a series 0 when they first were released and a Series 3 with GPS and Cellular. The 3 is incredibly fast, has long battery life (can sneak out 2 full days as long as I don't do a cardio workout), accurate, and a great tool for reading/sending texts. I'd say my primary uses are: 1) texting, 2) watch, 3) activity tracking, 4) news updates, 5) phone calls. I've been disappointed in it as a golf GPS tool, as I haven't found an app that works on its own without needed the phone to at least download the holes.