Fast enough to keep up with the actionGet extreme speeds from a microSDXC™ memory card for fast transfer, app performance, and 4K UHD.2 Ideal for your Android™ smartphone, action cameras or drones, this high-performance Extreme Pro microSD SDXC card does 4K UHD video recording, Full HD video, and high-resolution photos. Super-fast SanDisk Extreme PRO microSDXC™ memory card achieves read speeds up to 200MB/s8 and writes up to 140MB/s.8 Plus, it’s A2-rated, so you can get fast application performance for an exceptional smartphone experience.5Improve your workflow efficiencyWith SanDisk QuickFlow Technology Pair with the SanDisk Professional PRO-READER SD and microSD™ to achieve maximum speeds (sold separately).Write speeds of up to 140MB/SCapture fast-action photos or shoot 4K UHD video2 with write speeds of up to 140MB/s.8 The SanDisk Extreme PRO microSDXC UHS-I Card lets you shoot more and faster.Great for capturing 4K UHD videoIdeal for recording outdoor adventures, weekend trips, or sporting events without skipping frames. With up to 1TB1, the SanDisk Extreme PRO microSD UHS-I card lets you capture uninterrupted 4K UHD2 and Full HD video with its UHS Speed Class 3 (U3) and Video Speed Class 30 (V30) ratings.4Load apps faster with A2Get faster app performance for an outstanding smartphone experience thanks to the SanDisk Extreme PRO microSD card’s A25 Specification.Durable design for use in extreme environmentsSanDisk Extreme PRO microSDHC™ and microSDXC™ UHS-I Cards are shockproof, temperature-proof, waterproof, and X-ray-proof,3 so you can enjoy your adventures without worrying about the durability of your memory card.Compatible with MobileMate® USB 3.0 readerUse the MobileMate USB 3.0 microSD card reader with transfer speeds of up to 2000MB/s8, so you can move big files fast, move a lot of files fast or just make frequent file transfers that much quicker.