Quickly capture and transfer high-quality photos and extended lengths of Full-HD and cinema-quality 4K video, with a read transfer speed up to 300MB/s (2000x). The cards also leverage UHS-II technology (UHS Speed Class 3 (U3)) for high-speed performance, so you'll power through post-production with super-fast file transfer from card to computer.Shoot high-quality images and stunning 4K video.Using a DSLR or cinema-quality video cameras, you'll be able to leverage the latest photo and video features available for shooting high-quality images and extended lengths of Full-HD and 4K video.Dramatically accelerate your workflowLexar Professional 2000x SD cards offer super-fast speeds of up to 300MB/s read, dramatically accelerating your workflow from start to finish. With write speeds of up to 260MB/s, handle sequential burst mode and RAW plus JPEG effortlessly, so you never miss a shot.Designed for durabilityThese cards provide the performance you need to capture and store valuable data in a variety of elements. Lexar Professional 2000x SD cards are temperature-proof, shockproof, vibration-proof, and X-ray-proof.Backwards compatible at the highest UHS-I speedsFor versatility, the cards are also backwards compatible with UHS-I devices, performing up to the maximum thresholds of UHS-I speed capabilities. The cards also work with older, non-UHS-I devices, performing at Class 10 speeds.Rigorously testedAll Lexar product designs undergo extensive testing in the Lexar Quality Labs, facilities with more than 1,100 digital devices, to ensure performance, quality, compatibility, and reliability.Lexar 128GB UHS-II SDXC SpecsQuantity2Card TypeSDXCStorage Capacity128 GBBus TypeUHS-IISpeed Class10UHS Speed ClassU3Video Speed ClassV90Speed (X-rating)2000xRead SpeedMaximum: 300 MB/sWrite SpeedMaximum: 260 MB/sMinimum: 90 MB/sDurabilityTemperature ExtremesOperating Temperature32 to 158°F / 0 to 70°CStorage Temperature-13 to 185°F / -25 to 85°CBuilt-in Write-Protect SwitchYes