SanDisk 256GB Extreme PRO SDXC UHS-I Memory Card

The SanDisk 256GB Extreme PRO UHS-I SDXC Memory Card is designed for capturing Full HD, 3D, and 4K video, as well as raw and burst photography. It has a capacity of 256GB and is compatible with the UHS-I bus. It features a speed class rating of V30, which guarantees minimum write speeds of 30 MB/s, and also supports the U3 standard. Read speeds are supported up to 200 MB/s and write speeds max out at 140 MB/s (though some sources indicate up to 90MB/s write and 170MB/s read). The card includes a built-in write-protect switch. It is shockproof, x-ray proof, and waterproof, and can withstand temperatures from -13 to 185°F (-25 to 85°C operating). It comes with the option to download RescuePRO Deluxe software and a limited lifetime warranty. Some sources list max transfer speeds up to 200MB/s powered by SanDisk QuickFlow Technology when paired with a compatible reader, while others list speeds up to 170MB/s read and 90MB/s write for this specific model number.