CD-RW provides you the flexibility to write and rewrite your CDs, as much as 1,000 times, while offering compatibility for playback on your CD-R/RW burner, DVD-ROM, or your Multi-Read CD-ROM drive. Rewritability is beneficial for applications such as data back-up, and temporary storage of large files. Sony CD-RW discs provide high quality and long-term durablility for all of your application uses.