For those looking for the performance and stability of DVD-Recordable media, but want the flexibility to add to or overwrite their data, music or video, DVD Re-Writable discs are the solution. These discs offer 4.7GB or 120 minutes of DVD-quality storage capacity and are re-writable up to 1,000 times. DVD Re-Writable discs are available in DVD+RW and DVD-RW formats. Today, most DVD writers and readers use these discs interchangeably, however supported writing speeds may be different. To be certain you don't encounter compatibility issues, it is recommended that you purchase DVD RW media in the same format as your DVD ROM drive.