Designed for professional photographers and videographers, the 64GB Extreme PRO UHS-II SDXC Memory Card from SanDisk features a storage capacity of 64GB and takes advantage of the UHS-II bus to support advanced DSLR functions such as continuous shutter bursts and rapid shooting, as well as RAW and JPEG captures. This card is also well-suited for video capture, including 4K, 3D, and Full HD video, and can achieve maximum read speeds of up to 300 MB/s and maximum write speeds of up to 260 MB/s. Thanks to its U3 speed class rating, minimum write speeds are guaranteed not to drop below 30 MB/s. UHS-II media achieves its speed through an extra row of pins and while this card has been designed for cameras that are UHS-II compatible, it may be used in devices that do not support UHS-II. However, bear in mind that this card will then default to your devices speed class and bus rating, such as UHS-I and U3. If your device does not support U3, this card is compatible with the U1 and Class 10 standards, each of which guarantees minimum write speeds of 10 MB/s. As with most SanDisk cards, this memory card is shockproof, X-ray proof, waterproof, while also being able to withstand temperatures from -13 to 185Â° F, allowing you to take this card with you into extreme environments, such as snow, deserts, and pools.. Should the cards data become compromised, you also benefit from the option to download RescuePRO Deluxe software as well as a limited lifetime warranty.