Using these DX Arc Cubes is super easy. To use them with the DX Arc Riser, just insert the cube into the riser. You'll immediately hear the battle BGM and transformation sounds of the hero. When using with the Arc Eye Sword, place the cube in the sword and enjoy the hero's special move sounds and dialogues. Remember to keep the cubes away from water and high - heat areas as this could damage them. Also, don't try to open the cubes yourself. If you want to store them for a long time, keep them in a dry and cool place. Have fun with your new DX Arc Cubes!