Lexar Professional 1000x microSDHC/microSDXC UHS-II cards let you quickly capture, play back, and transfer multimedia files, including 1080p full-HD, 3D, and 4K video, with a read transfer speed up to 1000x (150MB/s).1 The cards leverage UHS-II technology (UHS Speed Class 3 (U3)) for high-speed performance, and include a microSD UHS-II USB 3.0 reader for high-speed file transfer. High-speed performance you can trust. Whether you're a professional photographer, videographer, or a mobile device power user, these high-speed cards provide performance you can trust. They leverage UHS-II technology (UHS Speed Class 3 (U3)) and provide a read transfer speed up to 1000x (150MB/s) when used with the included SD UHS-II reader. This gives you the speed and capacity you need to capture, transfer, and share more adventures on the go. Quickly transfer files with included SD UHS-II reader, dramatically accelerating workflow. Using the reader that comes with the Lexar Professional 1000x microSDHC/microSDXC UHS-II cards, you'll experience high-speed file transfer at UHS-II speeds, right out of the box. This dramatically accelerates workflow from start to finish, getting you back to capturing the action faster.