The collector's edition comes with an honest to god real life Pip Boy, that can hold your smart phone, with a Pip Boy app, that you can use to control your in-game menu! You don't need the Pip Boy to use the app.
http://www.ign.com/articles/2015/06/...s-real-pip-boy
http://www.theverge.com/2015/6/14/87...dition-e3-2015
And...sold out
http://www.amazon.com/Fallout-4-Pip-.../dp/B00ZGT8ILI