Designed for use in devices that support the UHS-II bus, such as advanced camcorders, DSLR cameras, and more, the 64GB 700S UHS-II SDXC Memory Card from Transcend can capture 4K, 3D, and Full HD video, plus raw and JPEG still images and photo bursts. It has a capacity of 64GB and features a speed class rating of V90, which guarantees minimum write speeds of 90 MB/s. Read speeds are supported up to 285 MB/s and write speeds max out at 180 MB/s. A built-in write-protect switch helps to safeguard against the accidental erasure of card data.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 / V90 compatible, it may be used in devices that do not support UHS-II / V90. However, bear in mind that this card will then default to your device's speed class and bus rating, such as UHS-II and V60, which support minimum write speeds of 60 MB/s, UHS-II and V30, which support minimum write speeds of 30 MB/s, or UHS-I and U3, which also supports minimum write speeds of 30 MB/s. 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 Transcend cards, this memory card is shockproof, X-ray proof, and waterproof, while also being able to withstand static, plus temperatures from -13 to 185°F, allowing you to take this card with you into extreme environments. Should the card's data become compromised, you also benefit from Transcend's free RecoveRx software for to help recover deleted content, including photos, documents, music, and videos.