Looks like a Markbass Octaver. It's an analog octave pedal. Check out this thread for more octave pedal recommendations: http://www.talkbass.com/forum/f36/octave-pedal-bass-999598/
This video is killer indeed! I never get sick of it. There aren't many videos of his band but you can find a lot of Eddie with Andrew Gouche - Band of brothers (Townhouse Jams) on youtube.
I'm a Boss OC-2 user and yea you could definitely get a similar tone since it also sounds very warm and organic.