Fast enough to keep up with the action The SanDisk Extreme microSDXC memory card lets you save time transferring media with read speeds of up to 190MB/s powered by SanDisk QuickFlow Technology (64GB - 1TB). Pair with the SanDisk Professional PRO-READER SD and microSD to achieve maximum speeds (sold separately). With write speeds up to 130MB/s, it's ideal for your Android smartphone, action cameras, or drones. This high-performance microSD card handles 4K UHD video recording, Full HD video, and high-resolution photos. Plus, it's A2-rated, so you can get fast application performance for an exceptional smartphone experience. Save time transferring content With SanDisk QuickFlow Technology (64GB - 1TB), this card optimizes performance for timesaving media offloads with quick read speeds up to 190MB/s. Pair with the SanDisk Professional PRO-READER SD and microSD to achieve maximum speeds (sold separately). Write speeds of up to 130MB/s Capture fast-action photos or shoot 4K UHD video with write speeds of up to 130MB/s.The SanDisk Extreme microSDXC UHS-I Card lets you shoot more and faster. Great for capturing 4K UHD Video Ideal for recording outdoor adventures, weekend trips, or sporting events without skipping frames. With up to 1TB, the SanDisk Extreme microSD UHS-I card lets you capture uninterrupted 4K UHD and Full HD video with its UHS Speed Class 3 (U3) and Video Speed Class 30 (V30) ratings. Load apps faster with A2 Get faster app performance for an outstanding smartphone experience thanks to the SanDisk Extreme microSD card's A2 Specification. Durable design for use in extreme environments SanDisk Extreme microSDHC and microSDXC UHS-I Cards are shockproof, temperature-proof, waterproof, and X-ray-proof, so you can enjoy your adventures without worrying about the durability of your memory card.