A CD disc that is 80mm (3 1/8") in diameter. Mini CDs hold 20 minutes of CD-DA audio compared to 75 minutes for the full-size 120mm (4 3/4") disc, or 180MB of data compared to 700MB. The mini CD fits into the deeper well in the center of the tray of most CD players and drives. Mini DVDs Are the Same Size Using the same platter size as the mini CD, mini DVDs hold 1.4GB of video compared to 4.7GB for the regular 120mm DVD. See DVD. Beware the Slot Loading Drive Before inserting a mini CD or mini DVD into the slot of a "feed drive," read the manual. Many feed drives do not accept the smaller platters and can be damaged. However, the small disc can be snapped into an 80-120mm adapter and then inserted. See business card CD and feed drive.