This is a very rare clip on case for the Samsung Galaxy S7 which allowed it to have a physical keyboard similar to the BlackBerry. This will only function with the Galaxy S7 phone.
I'm actually completely unsure how this thing works, the case itself is apparently drawing no power and doesn't have batteries but yet when you snap the front on with the physical keys it automatically recognizes it and they just work (maybe the back of the case is drawing power wirelessly, that's my best guess, but how it just knows when you put the actual keyboard on and the phone reacts to it - there's actually some really brilliant engineering going on in this device).
What you see in the photos is what you get. The case and the keyboard itself are practically brand new and flawless the packaging however isn't in the most pristine condition but it's definitely complete.
Please feel free to make an offer!