Meets Secure Digital 2.0 specifications. Fast data transfer rate. Store data, music, pictures and videos. Can be inserted into SDHC sockets. Write-protect switch, Convenient. Specifications: Description. Write-protect switch, Convenient. Interface. SD. Capacity. 8GB. Data Transfer Rate. Write: 6MB/sec(Class 6). Write Protect. Yes. Power Supply. 2.7v~3.6v. Dimensions. 11 x 15 x 1mm (0.43 x 0.59 x 0.04in).