Capacity : 128MB/ 256MB/ 512MB/ 1GB /2GB/4GB/ Fully complies with SecureDigital™ Association Specifications Perfect for the next generation of cell phones and mobile devices Approximately 20% the size, but has all the features and performance of a full-sized SD Card Fast speed. (Read: 10 MB/sec; Write: 8 MB/sec) A microSD Adapter for use with standard SD Card slots Ultra portable – slim, small, light weighted design Compliant with the Secure Digital Music Initiative (SDMI) Low power consumption is easy on device's batteries Easy to use – plug and play