When used in conjunction with a SanDisk MobileMate USB 3.0 microSD card reader, it offers transfer speeds of up to 150 MB/s. It is currently available for $229.99 and comes with a 10-year limited guarantee.
Meanwhile, SanDisk is marketing its new Pro-Cinema CFexpress Type B card as a memory card of Hollywood calibre, with minimum sustained write rates of 1,400 MB/sec. Western Digital claims that this is adequate to record 8K video at cinema quality without losing frames. Additionally, the card is resistant to drops of up to three feet in height. With a lifetime warranty, it is supported by a 320 GB card that is now on sale for $399.99.