Personalize, Protect and Organize All Your Memorex DVD's and CDR's with Memorex Labeling Kits, Labels, DVD Storage Cases and Jewel Cases. Amazon.com Ease of use, quality, convenience, and value are only a few of the many reasons for the popularity of the write-once CD-R, easily the most popular blank media available. Memorex CD-R offers 80 minutes of audio recording time or 700 MB of data storage, compatible with 1x to 52x computer CD writers. What's in the Box: 30 computer CD-R discs, data sheet.