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.
I've repeat ordered these Verbatim CD-R's every time (also for printable DVD-R) as I've had no problems at all with them. Some of the earlier batches seemed to have a 'Verbatim' signature engraved near the spindle hole, but later batches not.