The Batto Batto no Mi is a purple tomato-shaped fruit with swirl patterns around it and a curly green stem resembling a tail. The fruit is small enough to be held easily in a man's hand.
Strengths and Weaknesses
The main strength of the fruit's power is that it allows the user to transform into a full vampire or hybrid form. This also allows flight, the ability to create a shroud to cloak himself, and the ability to suck someone's blood from their bodies either by biting their neck or digging his nails into the victim's skin. By sucking his victim's blood, he can somehow age them and regain his own youth. The user also shows an apparent form of teleportation by appearing and disappearing in blood-red bursts of energy.
It seems that to access the fruits powers, the user must continually absorb the blood of others, as shown when Redfield gave it back to Luffy and Yadoya, he stopped using it. Otherwise, it has standard Devil Fruit weaknesses. It is unknown if weaknesses of vampires (garlic, sunlight, ect.) are also attributed to the user of this fruit.
Redfield is seen flying with his wings and attempting to suck Yadoya's blood. He later sucks Luffy's blood, leaving him in a state similar to aging him by many years. Luffy is left with white hair and gray skin, and his "aged" body makes it difficult for him to fight.