It says they’re better than lasers. https://www.facebook.com/story.php?story_fbid=pfbid0pd5jhJE88LC2J1PgbTsW4KdFu9aUcdsTnFZBR9pdg1XkjVwLDF9JUPTRzdxRqfsDl&id=100050306297601&post_id=100050306297601_pfbid0pd5jhJE88LC2J1PgbTsW4KdFu9aUcdsTnFZBR9pdg1XkjVwLDF9JUPTRzdxRqfsDl&mibextid=Nif5oz
