Battery : No.
No of Pieces : 2
The magnatab is a wonderful learning tool that provides an immersive, early writing lesson. Following the directional arrows, use the magnetized pen to trace over the letters or numbers and the beads will pop to the surface with an audible click revealing the shape. Press them back down with your finger or the pen and start over.The magnet never comes out of the pens and the balls are completely self-contained and stay securely in the board.