Details from Amazon:
- Get high-speed performance with UHS-II technology (U3) for a read transfer speed up to 250MB/s (1667x), up to 120MB/s write
- Captures high-quality images and extended lengths of stunning 1080P full-HD, 3D, and 4K video with a DSLR camera, HD camcorder, or 3D Camera
- Large capacity options up to 256GB let you enjoy shooting longer without changing cards
- High-speed file transfer from card to computer to dramatically accelerate workflow
- Backwards compatible with UHS-I devices
- Limited lifetime Warranty
Whether you’re a professional photographer, videographer, or enthusiast, Lexar Professional 1667x SDXC UHS-II card Make it easy to quickly capture and transfer 1080P full-HD, 3D, and 4K video. This card leverages UHS-II technology (UHS Speed Class 3 (U3)) to deliver high-speed performance—up to 250MB/s (1667x). this dramatically accelerates workflow from start to finish. For versatility, this card also works with UHS-I devices at UHS-I speeds, and they’re backwards compatible with older cameras and readers, performing at class 10 speeds when used with non-UHS devices. Card also come with a limited lifetime warranty.