Delkin 4 GB CombatFlash (CF) PRO 625X UDMA Memory Card DDCFCOMBAT-4GB Class 10 enabled for advanced transfer speeds up to 24MB/s - 163X Optimized for digital SLR photography, HD video, high-res. files & data transfer Waterproof - Sealed components protect data in the event of underwater submersion, high humidity & moisture Ruggedized - Soldered and sealed connections deliver reliable performance during extreme vibration, acceleration, shock or impact Reliable - Sophisticated wear leveling & error correction manage data continuously to insure data integrity and card stamina