This is Green Project's Recordable CD-R which provides high storage capacity and fast writing speed up to 52X. These write-once discs' large storage of 700MB is perfect and ideal for storing digital images, music (including MP3, WAV, FLAC, APE, AAC, AIF, M4A, and more), video, and more. Our discs quickly store up to 80 minutes of content within a few minutes. A cake box includes a pack of 10 blank discs that are compatible with most computer CD writers and can be played back on any CD Drive or player.