SanDisk Extreme PRO 64GB SD Card Class 10 UHS-I 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. Perfect for 4K UHD Video Sometimes speed is what you need. The SanDisk Extreme PRO SD UHS-I card delivers the performance to capture stunning, uninterrupted 4K UHD video. Full HD (1920x1080) and 4K UHD (3840x2160) video support may vary based upon host device, file attributes and other factors. See the official SanDisk website for more details. Stunning Sequential Burst Mode Shots Rated UHS Speed Class 3 (U3) and Video Speed Class 30 (V30) (2), the SanDisk Extreme PRO SD UHS-I card lets you capture sequential burst mode shots without missing a beat. UHS Speed Class 3 designates a performance option designed to support 4K UHD video recording with enabled UHS host devices. UHS Video Speed Class 30 (V30), sustained video capture rate of 30MB/s, designates a performance option designed to support real-time video recording with UHS enabled host devices. See the official SanDisk website for more details. Product features - Read speeds up to 170MB/s - Shot speeds up to 90MB/s, - 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