Save time with card offload speeds of up to 190MB/s powered by SanDisk QuickFlow Technology Pair with the SanDisk Professional PRO-READER SD and microSD to achieve maximum speeds (sold separately) Up to 90MB/s write speeds for fast shooting 4K UHD-ready with UHS Speed Class 3 (U3) and Video Speed Class 30 (V30) Rated A2 for faster loading and in-app performance Description 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. Pair with the SanDisk Professional PRO-READER SD and microSD to achieve maximum speeds (sold separately). With write speeds up to 90MB/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.