Our most powerful SD UHS-I memory card yet delivers performance that elevates your creativity. With shot speeds of up to 90MB/s and UHS speed Class 3 (U3)recording, you’re ready to capture stunning, high-resolution, stutter-free 4K UHD video. And, because your pace doesn’t let up after the shots are in, it delivers up to 170MB/s transfer speeds for a faster post production workflow. Plus, it’s built to withstand weather, water, shocks and other less-than-ideal conditions so you can rest assured that it’s good to go wherever your work takes you. Product features - Read speeds up to 170MB/s [64GB-512GB] - Perfect for shooting 4K UHD video and sequential burst mode photography - UHS Speed Class 3 (U3) and Video Speed Class 30 (V30) - Built for and tested in harsh conditions: Temperature-proof, waterproof, shock-proof, and x-ray-proof