This is a product featuring a Hello Kitty face-shaped case containing a mascot, which can be taken out and attached to a ball chain. I believe you're meant to take the mascot out and use it, as shaking it while it's inside the case will cause the face to open. This product is from 2002, but it has been kept in a collection box unused, so it has no discoloration and is in good condition. Size: 3cm x 4cm, Thickness: 2cm Thank you for looking.