Watch face can run on devices with Wear 2.0 (API level 28) or higher.
To customize background and complications long press on watch face.
Three colors of background are available and three editable complications.
Circle with heart rate is fixed and cannot be changed (heart rate is measured every 10 minutes automatically or you can tap on it to measure it manually).
Circle with battery information can be changed to other complications but the progress bar will still show current battery status.
Watch hands are transparent in the middle for better readability of other informations.