This high-performance microSDXC card delivers read speeds up to 200MB/s and write speeds of 90MB/s, ideal for recording 4K UHD video on action cameras, drones and smartphones. It features A2-rated app performance and V30 video speed classes for reliable high-speed data transfers. The rugged construction is waterproof, shockproof and X-ray proof, and comes supplied with a full-size SD adapter.