Android devices running 4.4+ can download the Material Design Google Clock app from Google Play
While the update brings an updated look for many Moto users and Nexus owners, for others the Google Clock app offers a different look even though the capabilities are the same. This means that the app offers a stopwatch, countdown timer, world timer and alarm clock. And it also allows you to snooze or dismiss an alarm from your Android Wear powered timepiece.
As we noted, those with stock or close to stock Android should already have the updated clock app on their phone. You can tell by looking for the new Clock icon on your home screen. Others can download the app for free from the Google Play Store. Your phone needs to be running Android 4.4 or higher to download and install the app.
source: GoogleClock (Android)