The San Disk Ultra 100x speed SD Card meets the needs of serious photographers who require faster performing cards to capture the great pictures they want. Each Ultra SD card features a minimum read / write speed of 15 megabytes per second (MB/sec.) making it ideal for high end compact cameras. The increasing megapixel count of digital cameras can result in extremely large image files which lengthens the time required for the camera to capture the image & save it to the secure digital (SD) card. San Disk has designed its new San Disk Ultra SD card so that large image files can be saved in less time & photographers can take additional pictures more quickly. The cards are fully compatible & interchangeable with all SD card digital cameras, card readers & adapters.