While many non-Apple watches use the Android Wear OS, this doesn’t mean they won’t work on an iPhone. The Android Wear app is available for Android and iOS and is all you need to pair your phone to your watch. If you have another watch, or are changing watches, then the Android Wear app allows switching between them.
Android Wear works with Google Now and all Google products (Gmail, maps etc) and allows for voice control. Notifications pop up from the bottom and can be dismissed by swiping them away. Android Wear works with both round- and square-faced watches, but looks nicer on round faces.
You can get updates on everything you follow online, like sports and weather. It also has estimated travelling times. If you’ve ever used Google Now on your phone, then notifications will look familiar. The downside of notifications is if you don’t dismiss them, they sit on top of the bottom of the screen.
The pre-loaded watch faces leave something to be desired, with many dull designs, and often can’t be customised. However, they do give you the option to keep the screen on in a low-power state. Along with touch interface, watches running Android Wear have a single physical button.