Size is approx; 12.9 by 12.9 by 12.9cmAdditional product info; Every time you open the Pokeball, Pikachu pops out! When you gently poke it, Pikachu will talk to you! You can enjoy various reactions from Pikachu every time you open or poke it! If you poke it continuously, you will hear a special reaction! Note: If left untouched for about 10 minutes, it will enter Drowzee mode. Uses two AAA alkaline batteries (batteries not included). Please use alkaline batteries. The size in an open state is approximately 11.8 cm in height, 7.6 cm in width, and 13.3 cm in depth.