This is Nintendo's Pocket Pikachu. I've confirmed it works with a new button battery installed. (The battery will be removed before shipping) All buttons function. The right button might need a slightly firmer press, but it works without any problems. It was kept in a drawer, so it's in clean condition with no major scratches. It's not new, so please refer to the photos for condition. For an additional 150 yen, I can include the new battery I used for testing. Please comment if you'd like this.