Laser Clock projects time

The Laser Clock comes with a keychain fob while featuring a combination of LCD and laser technology which projects the current time onto virtually all surfaces, somewhat like how the Batman signal is projected across Gotham City during dire times. Other than the novelty factor, there isn’t much to be said for the Laser Clock. I mean, don’t you already own a watch and a cellphone that tells you the time as it is? Why pick up yet another gadget that does the same thing, unless you realize that you do not yet own a keychain until today? The Laser Clock retails for $29. I wonder how the battery life is like…