The SanDisk Extreme microSDXC memory card lets you save time transferring media with read speeds of up to 190MB/s9 powered by SanDisk QuickFlow Technology10 (64GB - 1TB). Pair with the SanDisk Professional PRO-READER SD and microSD to achieve maximum speeds (sold separately). With write speeds up to 130MB/s9, its ideal for your Android smartphone, action cameras, or drones. This high-performance microSD card handles 4K UHD video recording, Full HD video2, and high-resolution photos. Plus, its A2-rated, so you can get fast application performance for an exceptional smartphone experience. With SanDisk QuickFlow Technology10 (64GB - 1TB), this card optimizes performance for timesaving media offloads with quick read speeds up to 190MB/s.9 Pair with the SanDisk Professional PRO-READER SD and microSD to achieve maximum speeds (sold separately). Ideal for recording outdoor adventures, weekend trips, or sporting events without skipping frames. With up to 1TB1, 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. Get faster app performance for an outstanding smartphone experience thanks to the SanDisk Extreme microSD cards A27Specification.