SanDisk SDCFX-2048-786 2GB Extreme Cf Card (Retail Package) Features ESP Technology (Enhanced Super-Parallel Processing Technology), which provides best-in-class performance. SanDisk Extreme CF Memory Cards are tested in extreme temperature ranges from -13 to +185 degrees Fahrenheit so that they can be used to shoot photos in any weather condition SanDisk Extreme CF Memory Cards are shock and vibration tested with industrial-grade RTV included, which is designed for rugged use Backed by a lifetime warranty, if there's ever a problem, we'll replace it! In addition, these cards are packaged with a mini-CD for data recovery software, RescuePRO, to recover photos that are accidentally deleted. A dedicated technical support line is available for our direct customers of SanDisk Extreme products, and the support from this hotline will receive priority service. Lastly, these cards also include a travel case to help photographers keep their memory cards organized.