Designed for high bit depths, frame rates, and resolutions, including Full HD, 4K, and 3D video, as well as raw and continuous burst photography in DSLR and drone systems, the 256GB AV Pro UHS-II SDXC Memory Card from Angelbird features a storage capacity of 256GB and takes advantage of the UHS-II bus to support sustained read speeds of 170 MB/s and sustained write speeds of 105 MB/s. This card has also been designed with the V60 Video Speed Class rating, which guarantees minimum write speeds of 60 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 / V60 compatible, it may be used in devices that do not support UHS-II / V60. However, bear in mind that this card will then default to your device's speed class and bus rating, such as UHS-II and V30, which supports 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.Built for extreme conditions, Angelbird's 256GB AV Pro UHS-II SDXC Memory Card is protected against water, shock, x-rays, magnets, and temperatures ranging from -13 to 185?F. Also featured is ECC data reliability, wear leveling, and power management for low power usage. A built-in write protect switch helps to safeguard your content from being erased. Included is a basICColor mini target and an activation code for the full limited warranty and additional free software licenses and content.General FeaturesSustained Read Speed: 170 MB/sSustained Write Speed: 105 MB/sMin Write Speed: 60 MB/sSDXC / UHS-II / V60 / U3 / Class 10Records Full HD, 3D and 4K videoStable StreamOperating Temperature: -13 to 185?F / -25 to 85?CStorage Temperature: -40 to 185?F / -40 to 85?CResistant against shock, dust, water, temperature extremes, x-rays, and magnetsSticker-freeBuilt-in write-protect switchWorks with Canon, Sony, Leica, Nikon, Fujifilm, Blackmagic Design, Hasselblad, Pentax, Panasonic, Olympus, Lumix, and others