The 512GB Professional 1066x UHS-I microSDXC Memory Card from Lexar features a storage capacity of 512GB and supports maximum read speeds of up to 160 MB/s and maximum write speeds of up to 120 MB/s. This card has also been designed with the V30 Video Speed Class rating, which guarantees minimum write speeds of at least 30 MB/s. All of this provides the speed and storage you need to capture more adventures on the go. Aside from support for UHS-I, V30, and U3, Lexar also built this card with support for the Application Performance Class 2 (A2) spec, which includes optimizations to give Android users an improved mobile experience, delivering faster mobile app performance. The A2 spec allows the card to manage random read input-output access per second (IOPS) operations so it can quickly open apps and process accompanying tasks, such as audio, graphics, saved profiles, and in-app permissions. To help increase durability, Lexar designed this card to be resistant to water, shock, vibration, x-rays, and temperature extremes. Included is a microSD to SD adapter, allowing this card to be used in SD-compatible devices. 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. 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 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.