Here are a couple of clear screenshots from the video.

Features:

Paddle
D-pad
Trackball
Keypad
Face buttons
Shoulder buttons
Full-sized HDMI out?
Headphone jack

It's pretty cool that it has all the inputs required to play every Atari home console game and even many arcade games. Having a paddle for games like Tempest is awesome. The trackball, however, was never designed for thumb use. In games like Crystal Castles or Marble Madness, you have to go nuts on it with your hands to be any good. Maybe it lets you dial up the sensitivity.