SanDisk Extreme 8GB SDHC UHS-1 Flash Memory Card Speed Up To 45MB/s- SDSDX-008G-X46(Label May Change) Capture HD video on Class 10 camcorders and video-enabled DSLRs Store up to 4 hours of H.264 high-def video Performance/speed: Up to 45 MB/sec read and write speeds (Class 10) Compatibility: compatible with all SDHC supporting cameras and camcorders Security: Built-in write-protect switch prevents accidental data loss