The Batman Box Set includes four books:

Bat-Signal: Lighting the Dark Knight's Sky Shades of Black: The Many Costumes of Batman The Batman Villains: The Worst Gotham City Has to Offer The Batmobile: Under the Hood of the Most Famous Car in Comics

Each book is hardcover, 48 pages, and fully illustrated with full-color artwork throughout, and they come packaged in a handsome slipcase.