SanDisk SDCFX3-016G-A31 16 GB Extreme III CompactFlash Card (Retail Package) Super-fast photo capture: Sequential write and read speed for faster capturing and viewing of large image files. Extremely fast card-to-computer transfers: Copy image files in no time. Advanced ESP technology: Enhanced Super-Parallel Processing provides the fastest speeds and highest performance. Shock and weather-resistant: Industrial-grade components, temperature ranges from -13 F to 185 F (-25 C to +85 C). Special data recovery software: Comes with RescuePRO software, an easy way to recover photos that have been accidentally deleted.