Perfect for the latest high-megapixel cameras and HD camcorders that support the new SDXC* format: SanDisk Ultra® SDXC™ flash memory cards deliver great , "don't miss a shot"  performance for taking photos, and fast downloads between your PC and card, reducing wait time. The cards feature a Class 4 rating to ensure smooth HD video capture and playback and fast transfer speeds of up to 15MB/s/¹.