Sony Branded 48X CD-R Discs in Jewel Cases by Sony. Save 63 Off!. $3.66. CD-R (CD-Recordable) offers a 700MB/80 minute capacity, a 48X write speed and branded surface. Ideal for demo music mastering, prototyping CD-ROMs and limited edition CD production runs. Disk delivers the mechanical precision needed to meet today's high-speed recording requirements and is compatible for playback on CD-ROM, audio CD players and photo CDs. Disks come in slim jewel cases.