ADATA High Endurance microSDXC/SDHC UHS-I cards are high endurance, Video Speed Class 30 (V30) memory cards that are specifically designed for continuous recording and constant re-recording. They are ideal for dashcams and surveillance systems, and any other application that requires stamina for non-stop recording. What's more, with an Application Performance Class 2 (A2) rating, they can provide users with a faster, smoother app experience. Plus, they can handle extreme environments with their waterproof, shockproof, and X-ray-resistant constructions.Made to Handle Thousands of Hours of RecordingBuilt with high-quality NAND Flash chips, High Endurance microSDXC/SDHC UHS-I cards are made to withstand up to 40,000 hours of high-definition video recording. Whether a fender bender on your dashcam, incident on your CCTV system, or home video on your camcorder, you can be at ease that all will be captured. All-Round ProtectionWith error correcting code technology, these cards can detect and fix a wider range of data errors. Plus, they are also waterproof, shockproof, X-ray-proof, static-proof, and resistant to extreme temperatures. - Waterproof : Can survive accidental submergence in 1 meter of water for 30 minutes - Shockproof : Resistant to shock, drops, and bending - X-Ray-proof : Conforms to the ISO7816-1 standard - Static-proof : Passed EMC IEC61000-4-2 static test - Extreme temperature resistance : -25°C to 85°CUHS-I and V30 CompliantThese UHS-I U3-compliant V30 Video Speed Class cards provide read/write speeds of up to 100/80MB per second, making 4K, 8K, 3D, or 360° video recording a snap. A2 qualified - for faster app performanceWhether watching videos or playing games, these Application Performance Class 2 (A2) cards run and launch mobile apps faster for a smoother experience. Record and Store MoreWith capacities ranging from 32GB to 256GB, High Endurance microSDXC/SDHC UHS-I memory cards make it easy to store thousands of photos and tens of Full HD movies on your mobile phone, dashcam, or surveillance system.