This is KOKUYO's electronic word book, memoribo. It contains over 1000 English words with their Japanese meanings, allowing you to study English vocabulary with just this one device. I used it during my student days, but I no longer need it, so I'm selling it. There are no instructions, so only the product will be shipped. Batteries are not included. For those who understand that this is a home-stored item, thank you for your understanding.