SanDisk Extreme PRO microSDXC™️ UHS-I CARD Fast enough to keep up with the action Get 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/s and writes up to 140MB/s. Plus, it’s A2-rated, so you can get fast application performance for an exceptional smartphone experience Capacity: 256 GB (SDSQXCD-256G-GN6MA) with Adapter Sequential Read Performance: Up to 200MB/s Sequential Write Performance: Up to 140MB/s Compatibility Compatible with microSDHC, microSDXC, microSDHC UHS-I, and microSDXC UHS-I supporting host devices Dimensions (L x W x H): 0.43" x 0.59" x 0.04"