A free program for Android, by Giraffe Playground.

The Hypno Clock Live Wallpaper captures the wonder of clockwork with its abstract depiction of the animated gears and parts of a mechanical watch. This app is complete with a variable speed Swiss Tourbillon escapement. Its features make it more realistic and offers a beautiful background. 

The live wallpaper comes with a robust customization tool that allows you to change a variety of intriguing and eye-catching effects, including the escapement speed and the colors of individual components. This is also free of charge and you can downalod it anytime.