Verbatim 52x Crystal Datalife Plus Azo CDR discs demonstrate a high level of compatibility between CD or DVD writers running at a wide range of speeds. DataLifePlus CD-R's offer the highest protection against accidental damage. The key to long term data storage life depends upon the stability of the active dye layer. As a world leader in optical technology Verbatim has invested in the development and manufacturing of a new dye, Metal AZO, enhancing media durability and stability, thus providing long term storage life.