Sharp. Black. Buttons. A power cord. We see Art Lebedev's logo, so "alien weapon" can be ruled out right off the bat. But actually, the truth is still fairly epic.
It's a laser beam clock called Reflectius.
Sixty rotating mirrors redirect a beam of light in glorious overkill fashion, simply to tell you the time. For now, Reflectius is only a concept. But given Lebedev's concept-to-product history, don't be surprised if this goes on sale in the not-so-distant future... for a whole lot of spacebucks. [Art Lebedev via The Awesomer]