• Our best-in-class read & write speeds up to 180MB/s & 130MB/s respectively. • UHS-I Speed Class 3 (U3), Class 10 and V30 for 4K UHD and FHD video with capacity up to 512GB. Includes Full-Size SD Reader. | Samsung PRO Plus + Reader Full Size SDXC Card 512GB(MB-SD512SB/AM)