The SanDisk Extreme® microSDXC™ memory card lets you save time transferring media with read speeds of up to 170MB/s* powered by SanDisk® QuickFlow™ Technology⁹. Pair with the SanDisk® Professional PRO-READER SD and microSD™ to achieve maximum speeds (sold separately). With write speeds up to 80MB/s* it’s 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. Features Up to 170MB/s read; up to 80MB/s write** Adaptor Included Capture stunning 4K UHD video² 64 gb memory Shock-, temperature-, water-, and X-ray-proof