SanDisk Extreme - Flash memory card - 16 GB - 400x - CompactFlash READ & WRITE PERFORMANCE: Up to 60MB/s (400x) for serious performance gains. UDMA: UDMA 5 enabled (works in all UDMA modes) TEMPERATURE: Tested to perform from -13F to 185F DURABILITY: Shock protection and RTV silicone coating added inside for protection against moisture and humidity WARRANTY: Backed by rigorous stress-testing procedures and our limited lifetime warranty.