Sandisk Memory Stick Micro (M2) 4GB
Dual voltage operation; 1.8v for new Sony Ericsson mobile phones, 3.3v for Memory Stick PRO Duo compatible device Controlled ejection design allows for easier removal Sony Magicgate encryption technology support Product Specifications: Capacity: 4GB Read/write: 10MB/sec read, 3MB/sec write Card dimensions: 0.59 x 0.49 x 0.05 (L x W x H) Voltage: 1.8v, 3.3v