The product is a new Fujitsu DYNAMO 640mb rewritable magneto optical disk, sealed and in gigamo size. It is a high-quality storage solution ideal for computers, laptops, and other electronic devices. With the trusted Fujitsu brand, you can expect reliable performance and durability for storing and accessing your data. Whether you need a reliable storage option for personal or professional use, this magneto optical disk is a great choice for your needs.