Each Memorex DBS C-90 Audio Cassette offers a total of 90 minutes recording time or 45 minutes on each side. This package contains two, 90-minute cassette tapes. In 1971, Memorex launched recordable audio cassettes with one of the most memorable campaigns in television history, and led the industry in sales for the next 20 years. Memorex has set the standard for audio and video recording for well over 30 years. Today, Memorex products are recognized and used by people of all ages, colors, and backgrounds with its recording group more popular than ever.