More on the Shield Mode, pressing and holding the button will play an attack absorption sound. Once you release your finger from the button after pressing and holding it, it will play the radiation attack sound. Said sound changes depending on how many seconds you pressed and hold it down.
On the other hand, for the Calibur Mode, pressing and holding the button will activate three kinds of special move sounds. Pressing and holding it once to activate the Miracle Type special move, twice to activate the Strong Type special move, and finally, three times to activate the Flash Type special move. This item cost 4,378 yen and is set for an October 22nd release.