Believe it or not, you won't actually need a View-Master to view the content Google is presenting this week. The View-Master device is just a box with a magnetic switch - just like Google Cardboard. To "view" a View-Master reel - like the "reels" you remember from the original View-Master, you'll need only your smartphone. To view these reels correctly, you'll need a Google Cardboard headset - and that doesn't need to be manufactured by Mattel. The View-Master headset just makes everything easier to understand visually.