What does it do? Cut’n’dry, from the Wall Street Journal via Gruber:

When you slip Spectacles on and tap a button near the hinge, it records up to 10 seconds of video from your first-person vantage. Each new tap records another clip.

1. They look stupid, but so does much of wearable tech and perhaps this is just my taste;
2. I would not want Snap Inc. to have the power to “see what I see” arbitrarily, I’d like to see the terms of use and privacy policy of these things;
3. Bluetooth?