Ready to step up from a fitness tracker? A smartwatch will give you all the same activity monitoring functions, but add extra features for checking messages, controlling your phone functions, and even answering calls.
Of course, you can't talk smartphones without mentioning the Apple Watch, the best-selling smartwatch in the world. Apple has pretty much defined a product genre with this one, but it's important to remember that the Apple Watch isn't the only game in town.
You can get the same functions cheaper by choosing a rival smartwatch from Garmin, Fitbit or Samsung. These devices will work with an iPhone thanks to their apps, though you will miss out on some of the Apple ecosystem smoothness.