Wear OS 4 Developer Preview
The next version of Wear OS is now available for testing, development, and feedback. Try it out with your apps and let us know what you think!
What's in Wear OS 4 Developer Preview
The latest version of Wear OS includes several updates and optimizations to help your app run as smoothly and efficiently as possible.
Watch Face Format
Bring your creative vision to life using either Watch Face Studio or the new Watch Face Format.
New data types
Health Services offers new data types, as well as improved permissions for background body sensors.
64-bit kernel and user space
Prepare your app for 64-bit only hardware and take advantage of the new performance and security improvements in Wear OS 4 Developer Preview.
Tools and resources
Set up the emulator
See a preview of how your app looks on a device that runs on Wear OS 4 Developer Preview.
Test for app compatibility
Learn about behavior changes in the latest version of Wear OS that might affect your app.
Explore new features
Discover how you can further enhance your app's experience on Wear OS 4 Developer Preview.
Video: How to build high quality experiences on Wear OS
Learn how to set your app apart by adding surfaces and features to drive engagement.