Digital clock widget xperia is an android app provides an widget to add in home screen with high customization. Its an best app and provides more customization.
Features like showing battery percentage, weather details, changing the font, various widget size and styles, showing next alaram and more.
Its small in size and available in free and premium apk. In premium, you will get more customization feature.
Here is the download link. Android 2.3 is required as minimum. Its an best clock widget app available in play store.