CD-R is short for CD-Recordable. The discs are also known as WORM media which stands for Write Once, Read Multiple. The advantage of CD-R over other types of optical media is that you can use the discs with a standard CD player. The mechanical specifications of Verbatim media are very precise, and data written to it can be read in a wide range of drives. As a result, Verbatim DataLifePlus discs demonstrate a high level of compatibility between drives running at a wide range of speeds.Key Features Media Type: CD-R Capacity: 700 MB Quantity: 50 Product Type: Storage Media Max. Write Speed: 52 Form Factor: 5.25"Key Benefits Full-color, high resolution, photo-quality printing Fast Ink drying & Longer lasting colors Superior ink absorption on high-resolution 5,760 DPI printers Crisp & clear text reproduction Qualified for use with CD/DVD inkjet printers from Primera, Microboards, Epson and others Super Azoâ„¢ recording dye optimizes read/write performance