A free program for Android, by ttnnapps.

A live wallpaper that shows a digital clock carved on a surface is a perfect background for your smartphone or tablet. It can be configured to have a simple minimalistic clock with built-in surface such as wood, metal, gold, silver, rock, marble, ice, or glass, and optionally surrounded by elegant pattern of your choice.

The background can be set up as a photo clock in which the clock text is carved on any surface in the background image that is cropped out from your stock photo.

The app lets you choose the font and date format, and has options to show seconds / date / day of the week and AM/PM marker in your device setting language.