The 64GB Ultra UHS-I microSDXC Memory Card from SanDisk features a storage capacity of 64GB and takes advantage of the UHS-I bus to support DSLR functions such Full HD video as well as raw and JPEG captures. This card achieves maximum read speeds of up to 140 MB/s, and thanks to its U1/Class 10 speed class rating, minimum write speeds are guaranteed not to drop below 10 MB/s. Using its A1 certification, which optimizes it for Android apps, users will experience faster app launches and performance. This card is also resistant to water, shock, x-rays, magnets, and temperature extremes. The free, downloadable SanDisk MemoryZone app lets users organize, browse, and back up files on their Android device, while an included microSD to SD adapter lets this card to be used in full-sized SD slots.