These are the batteries that were in a SONY PocketStation. They no longer work. The button battery has the PlayStation mark on it. How about it for your collection? Please refrain from giving a low rating due to reasons such as "it's different from what I expected" m(_ _)m I want to sell it, so please refrain from "likes" if you are not interested in buying (;o;) It is a used item. Please refrain from purchasing if you are sensitive to used items as it has been stored by a private individual. It will be simply packaged for shipping. If you have any questions, please comment.