Disclosed is a battery including a cathode in which cathode active-material coating layers provided on both surfaces of a cathode collector are longitudinally deviated from each other, and an anode having at least one anode active-material coating layer provided on an anode collector, the cathode and anode being wound to face each other with a separator interposed therebetween. The piezoelectric floor contains piezoelectric material therein. A retaining rubber 6 disposed in the second peripheral groove 4, the seal rubber 3, and a bridge rubber 7 disposed in the communicating hole 5 are integrated. The overlapping parts of the plurality of the elastic strips are configured to fill at least a part of the respective recesses. A swipe with a magnet is no longer necessary to cycle through the display.