applygeek is many years late reporting on this.
It's a pulsed YAG sent through galvos and adjustable lens to induce air breakdown (no color). It can only do a few tens of dots per second, and relies on persistence of vision. Resolution, framerate, power consumption, safety, and price are all absolutely terrible. It's neat, but it's a gimmick, and not feasible for any consumer applications, really.