Di2 Controls for Edge

I am awaiting delivery of my Di2 R8050 bike and would like to be able to control my edge 1050 with the buttons on the top of the hoods.
So i am a little confused if i need to buy an extra box to do this or does it support ant to control the edge or do i need bluetooth?
So i am a little confused if i need to buy an extra box to do this or does it support ant to control the edge or do i need bluetooth?
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https://youtu.be/kt-F_tURzvo
Mitch
@Bigmitch_racing
2010 Specialized Tricross (commuter)
2014 Whyte T129-S
2016 Specialized Tarmac Ultegra Di2
Big Mitch - YouTube
More or less anywhere. I have it between the battery and junk B in the seat post. Some have it between the rear derailleur and junk B.
@Bigmitch_racing
2010 Specialized Tricross (commuter)
2014 Whyte T129-S
2016 Specialized Tarmac Ultegra Di2
Big Mitch - YouTube