Each disc is rewritable up to 1000 times. Easy to write on for faster labeling. Leave disc open to add data, or close it to make data permanent. Disk Type: CD-RW. Includes 50 discs. Reusable data-storage. ---- 1. Even if it is brand new. 2. Product warranty and other products made in Japan are not applicable. 3. Packaging and instructions are in English.