SanDisk Extreme PRO SDXC UHS-I Memory Card comes with 128GB capacity. This Memory card is designed for SD devices which can capture Full HD, 3D, and 4K video, as well as raw and burst photography, the Extreme PRO UHS-I SDXC Memory Card is compatible with the UHS-I bus, and also features a speed class rating of V30, which guarantees minimum write speeds of 30 MB/s. If your device does not support the V30 standard, this card also supports the U3 standard, which likewise guarantees minimum write speeds of 30 MB/s. Read speeds are supported up to 170 MB/s and write speeds max out at 90 MB/s. A built-in write-protect switch helps to safeguard against the accidental erasure of card data. This memory card may be used in devices that do not support UHS-I / V30 / U3. And also it supports minimum write speeds of 10 MB/s, or Class 10, which also supports minimum write speeds of 10 MB/s. This memory card is shockproof, X-ray proof, waterproof, while also being able to withstand temperatures from -13 to 185°F which is also fit with extreme environments, such as snow, deserts, and pools. The SanDisk Extreme PRO UHS-I SDXC card delivers the performance to capture uninterrupted 4K UHD video.