I purchased this about two years ago, but I've been using a different product instead, so I'm selling it as I haven't used it much. I checked online, and new ones on Amazon and Rakuten are priced around 3,500 to 4,000 yen, so you can get a good deal on this one, although it has some minor signs of use. It runs on AAA batteries. Operation has been confirmed. There is no box or instruction manual.