Apple opened up its Software Development Kit, dubbed Watch Kit, to developers on Tuesday for coders looking to create apps for its upcoming Apple Watch.
While SDK is only available to app developers, the iPhone maker also released a set of public documents that accompany the kit and they reveal a lot about how the new device works.
Here are a few highlights the documents and the introduction video, which were first reported on The Verge.
Apple Watch only works with an iPhone
The app runs with an iPhone extension, which supplies the processing power. "A Watch app complements your iOS app; it does not replace it. If you measure interactions with your iOS app in minutes, you can expect interactions with your Watch app to be measured in seconds, " Apple said in the documentation.
Native apps coming soon
Starting later next year, developers will be able to create, what Apple refers to as "fully native apps" for the device.