DESC: 133X Professional CompactFlash Memory Cards - Designed for High Performance and Superior Reliability - Lexar Media's Professional CompactFlash Memory Cards are ideal for any photographer who demands optimal performance from both the memory card and Digital SLR camera they use. Lexar's 133x read & write speeds is designed to speed up image capture times by taking advantage of a Digital SLR camera's high-speed processor. Ideal for fast-paced applications such as photojournalism, sports and fashion, Lexar's high-speed series and professional digital film brings out the ultimate performance from your professional equipment.