Experience blistering speeds on a totally new level, with read speeds of up to 1750 MB/s and write speeds of up to 1000 MB/s with the Lexar 64GB Professional CFexpress Type-B Memory Card. Packed with plenty space to store smooth, raw 4k video footage and stills. General features to the 64GB professional CFexpress Type-B Memory Card include PCI Express 3.0 and NVMe protocols to help you achieve high-speed performance, reliability and durability. 

The Lexar 64GB Professional 1667x 250MB/s UHS-II SDXC Memory Card is professional, high-performance card is well suited for photographers/videographers wanting to capture 4K, 3D, Full HD video, and video capture. The card takes advantage of the UHS-II bus to support advanced, yet crucial functions of a DSLR camera, such as rapid shutter bursts, as well as RAW and JPEG shooting.

With the 64GB Professional 1667x 250MB/s UHS-II SDXC Memory Card from Lexar, you can achieve maximum read speeds of up to 250MB/s; and with a V60 speed class rating it's guaranteed to achieve a minimum write speed of 60MB/s and nothing less than that. Additionally, the card has a built-in write protect switch which is quite essential as it is used to protect against accidental file deletion.