If you aren't looking for a product, you might be referring to these defining "features" of the original work:
Gone is the suave playboy. This Bruce is thick-necked, jowly, and grim. Miller strips away the fantasy of the eternal hero. Bruce’s joints ache. He has to use a robotic exosuit (the "Bat-Suit" reinforced with servos) to lift heavy objects. He gets winded. He bleeds. batman the dark knight returns