SanDisk Extreme Pro SD UHS-I Memory Cards 64/128/256GB 170mb/s

Card Type	SDXC
Storage Capacity	64/128/256 GB
Bus Type	UHS-I
Speed Class	10
UHS Speed Class	U3
Video Speed Class	V30
Data Transfer	Read Speed: 170 MB/s Maximum (Burst) Write Speed: 90 MB/s Maximum (Burst) Write Speed: 30 MB/s Minimum
Durability	Shockproof, Temperature Extremes, Waterproof, X-Ray Proof
Operating Temperature	-13 to 185°F/ -25 to 85°C
Storage Temperature	-40 to 185°F/ -40 to 85°C
Built-in Write-Protect Switch	Yes
Wireless Capability	None

Designed for SD devices that can capture Full HD, 3D, and 4K video, as well as raw and burst photography, the 64/128/256GB Extreme PRO UHS-I SDXC Memory Card from SanDisk has a capacity of 256GB, is compatible with the UHS-I bus, and 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.