You are bidding on an authentic boxed version of Pokemon Soul Silver for the DS including the Pokewalker.

The box is heavily damaged and the Pokewalker has some general nicks on the screen. Closely inspect the photos for anything that may be important to you.

The game itself has been played lots too by me recently. The last save file showed signs of Game Shark hacking but the new playthrough I did with it was legitimately done.