MiniDisc coMBines everything you like about tape with everything you love about optical. Like tape, its highly portable and easily recordable. The 2-1/2 inch disc holds 140 MB of data, yet slips easily into a shirt pocket. Like other optical formats, it offers superb random access and durability. Recordable MiniDisc uses Magneto Optical (MO) technology. But it manages to offer lower cost, greater portability and faster data writing than previous MO systems. The result is a small, light, portable system, ideal for battery-powered applications. Sonys MiniDisc is a performance breakthrough for an impressive range of applications: consumer stereo, prosumer-level multitrack audio, broadcast audio, data backup, data distribution and portable computing.