https://developer.android.com/training/wearables?hl=ko
https://developer.android.com/codelabs/wear-tiles?hl=ko#0
https://developer.android.com/training/wearables/design/download?hl=ko#design-kit
https://github.com/orgs/android/repositories?page=3&type=all
https://developer.android.com/training/wearables/data/data-items?hl=ko
https://github.com/googlearchive/android-Notifications/tree/master/Wearable/src/main
https://github.com/android/user-interface-samples
https://github.com/firebase/quickstart-android/tree/reg-token-sample/messaging/app/src/main