This 64GB SDXC Extreme Plus Class 10 UHS-I Memory Card from SanDisk features a maximum read speed of 80 MB/s along with a maximum write speed of up to 60 MB/s. This card has minimum transfer speeds of 10 MB/s. Such speeds enable smooth continuous burst shooting, Full HD video capture, and card-to-computer transfers. Additionally, the card is built to withstand up to 72 hr in 3.3' of salt or fresh water, and is also shockproof and immune to X-rays. A built-in write-protect switch prevents data from being accidentally modified, overwritten or deleted, while its Advanced Error Correction Code engine reduces the risk of errors during data storage and retrieval, and prevents potential data corruption.