Circles is a customizable watch face for Android Wear. It offers up to three circles that can display the current hour, minute, second, or battery level. The circles can be customized with different colors, thickness, padding, length, and gradient. The inner circle customization is limited in the free version of the app. In addition to the circles, two lines of text can be displayed in the center to provide more information about the current time, such as the day name or the date.

To configure the watch face, users can open the "Android Wear" companion app and select the "Circles" watch face. Overall, Circles provides a wide range of customization options for users to personalize their watch face and display the information they need at a glance.