Item description:

roughout Morrowind, they walked, the shades of a once great race. These dwemer spectres haunted ruins all across Vvardenfell forever guarding their puzzles and treasures. Yet, curiously, their presence was absent from Skyrim. But no more. Once again, these spirits walk through their halls, annihilating any traveler foolish enough to cross their paths.
Dwemer Spectres, as the name suggests, adds Dwemer spectres from Morrowind back into Skyrim. Unlike the previous game however, they have a bit more going on with them, with multiple types and stronger versions appearing at higher levels.