The new ultra-small memory card is designed to meet the growing storage needs of highly compact, multifunctional mobile phones. An 'M2' adaptor in the size of a standard Memory Stick Pro will allow users to exchange data to Memory Stick Pro compatible products.

The ‘M2’ media is approximately one-quarter the volume of ‘Memory Stick PRO Duo’ media, yet only about 1.2mm thick. ‘M2’ media is designed as an externally removable media with a controlled eject function to prevent users losing the media. Following the trend of mobile phones which operate at 1.8 volts, the ‘M2’ has been designed as dual-voltage media. In addition to 1.8 volt support, the media offers 3.3 volt operation which is required for existing ‘Memory Stick Pro’ compatible products.