SanDisk 64GB Extreme microSDXC UHS-I Memory Card

Save time with card offload speeds of up to 170MB/s powered by SanDisk QuickFlow Technology (Up to 170MB/s read speeds, engineered with proprietary technology to reach speeds beyond UHS-I 104MB/s, requires compatible devices capable of reaching such speeds.
Up to 80MB/s write speeds for fast shooting (Based on internal testing; performance may be lower depending upon host device interface, usage conditions and other factors. 1MB=1,000,000 bytes.)