According to Apple, the iPhone, iPad and Apple Watch will last three years with their original buyers
In other words, Apple expects the original owner of the average iPhone to keep the device for three-years before it is re-sold or tossed. The same three-years of life with the original owner is expected for both the Apple iPad and the Apple Watch.
As made clear on the website, Apple's data comes from the actual and modeled behavior of its customers. Apple has plenty of data to determine iPhone and iPad use, but with the Apple Watch just nine-days short of its first anniversary, the company doesn't have enough hard data and anecdotal evidence when it comes to the timepiece.
If you're an Apple Watch owner, do you see yourself updating to the next model? If so, do you think it will be before or after three years have expired.