It is designed by Bertrand Planes. This clock is not going to tell you the time now. Instead of hours, minute and second, this clock is designed to very slow with each number correspond to 7-year. It uses standard clock mechanism but slowing it to 1/61320th of the standard timepiece speed.

You can adjust the clock to your age and I can tells you how old are year by year.

[via TechFresh]