The 1TB Professional 1066x UHS-I SDXC Memory Card from Lexar lets you quickly capture and transfer high-quality photos, including Full HD and UHD 4K video with read speeds of up to 160 MB/s and write speeds of up to 120 MB/s. All of this allows you to dramatically accelerate your workflow. This card has also been built with a capacity of 1TB and the V30 Video Speed Class rating, which guarantees minimum write speeds of at least 30 MB/s. To help increase durability, Lexar made this card resistant to water, shock, vibration, x-rays, and temperature extremes. A built-in write protect switch will help guard your data from accidental erasures. General Features Quick Transfer Content This card leverages UHS-I technology to deliver read speeds of up to 160 MB/s, allowing you to transfer high-quality photos and 4K UHD video with ease to Capture the Action. Capture high-quality images and extended lengths of Full HD and 4K UHD video with maximum write speeds of 120 MB/s. This card is UHS Speed Class 3 (U3), and Video Speed Class 30 (V30), giving you the performance you need to shoot faster and longer. Load Apps Quicker with A2 Speeds With the Application Performance Class 2 (A2) rating , this card s is also great for use with applications on your Android smartphone. Quickly run and store apps directly on the A2 memory card using an Android Adoptable storage enabled device. Designed for Durability Lexar Professional microSD Cards provide the durability you need to capture and store valuable data in a variety of elements. These cards are rigorously tested, and designed to be resistant against water, shock, vibration, and x-Rays. Rigorously Tested All Lexar product designs undergo extensive testing in the Lexar Quality Labs, facilities with more than 1100 digital devices, to help ensure performance, quality, compatibility, and reliability.