Battery : Yes.
No of Pieces : 49
Domino train - Dominoes can be placed automatically, with light music, locomotive chimney can be fine-tuned left and right，put the dominoes into the card clip, it could be go around with automatic pendulum dominoes.
Easy Entertainment - Put the dominoes into the card clip and then put it on the train. The train will move forward and lay dominoes automatically while twisting left and right slowly..