Emisar, and it does a whole heck of a lot more than the picture. By default, it will light up a whole room when I bounce the beam off the ceiling. If I press the button twice, it turns a dark room into daytime. If I press the button twice, then twice again, it turns the room into a supernova and blinds everyone in it. I only use that mode for pointing at the corner of the room (when cats aren’t around) to take photos using refracted light.
There’s also like 70 other things it can do with its one single button, but I mostly just use “on” and “battery check”. It can tell you the room’s temperature! I’ve got two of his lights and they’re like 50 bucks each. One 18650. I have 20 18650s.