SanDisk SDSDXP1-016G-A75 16GB Extreme Pro SDHC Memory Card Extreme speed up to 45 MB/s speed means you'll get the shot you want. Extreme Full HD video speed enabled by UHS Speed Class 1 lets you capture fast-action video. Engineered with the SanDisk Power Core Controller, the SanDisk Extreme Pro SDHC card delivers blazing fast read and write performance. Extreme reliability and endurance, the SanDisk Extreme Pro SDHC Power Core ontroller's firmware increases endurance. Extreme durability- built for and tested in the harshest conditions-these cards are temperature proof, water proof, shock proof, and x-ray proof.