The Memory Stick Micro™ (M2™) is designed to meet the growing storage needs of highly compact, multifunctional mobile phones. Exchange data with standard-size Memory Stick PRO™-compatible products by inserting the M2™ into the supplied adaptor. M2™ is approximately one-quarter the size of Memory Stick PRO Duo™ media, and only about 1.2 mm thick. Because it's dual-voltage it can be used with both mobile phones (1.8 volts) and Memory Stick PRO™-compatible products operating at 3.3 volts.