I used this for my two sons. According to the manual, I believe I purchased it around 1996. It takes two AA batteries, which are included. I'm not sure how much battery life is left, but it's working fine now. The original price was 4,990 yen. The box is slightly damaged (see images), but it's otherwise in the same condition as when I bought it, including the manual. My two sons are adults now. It's too early for my grandchildren to use it, so I'm putting it up for sale. Thank you.