Can be used with a variety of digital products i.e. digital music players, cell phones, digital cameras, camcorders. 8GB capacity. Can read, write and erase. Write speed 5MB per second. Read speed 5MB per second. User selectable mechanical write protect switch. Security level complies with current and future secure digital music initiative (SDMI) portable device requirements. Stores approximately 2,232 images in standard resolution with a 5 mega pixel camera. Compatible with all SDHC compliant host devices. Not backwards compatible with legacy SD format host devices. Manufacturer's 5 year guarantee.