Brand : SanDiskStorage : 256GB100% Genuine ProductUHS-I / V30 / U3 / Class 10 Max Read Speed: 150 MB/s Max Write Speed: 60 MB/s Min Write Speed: 30 MB/s Records Full HD, 3D, and 4K Video Built-In Write-Protect SwitchOperating temperature : -25 degree C to 85 degree CStorage temperature : -40 degree C to 85 degree CItem Weight : 9.07 gProduct Dimensions : 3.19 x 0.20 x 2.39 cmPlease check camera manufacturers web site for host device compatibility, especially if your camera has a dual slotEngineered to capture 4K UHD video and sequential burst mode photographySuitable for DSLR cameras and 4K Ultra HD camcorders with SDHC supporting host devicesfor Full HD Recording and Playback 4K Videos, High Resolution Photo CapturingDurable with 4 Proof - Water Proof, Temperature Proof, Magnet Proof and X-Ray ProofData Sharing Made Easy - Can Be Used As an Standard Full Size SDHC Memory CardManufacturer : SanDisk International Ltd. Ireland/IndiaDesigned for SD devices that can capture Full HD, 3D, and 4K video, as well as raw and burst photography, the 256GB Extreme 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 150 MB/s and write speeds max out at 70 MB/s. A built-in write-protect switch helps to safeguard against the accidental erasure of card data.