The SanDisk Extreme SDHC/SDXC UHS-I card has the speed to capture 4K Ultra HD and Full HD video, so you can catch all the action. Display your high-quality videos on 4K Ultra HD TVs and monitors. Give your camera even more storage with up to 256 GB and with fast read speeds, you can offload your large photos and videos faster and always be ready for the next shot. Capture multiple frames per second and make the most out of your devices burst mode capabilities with write speeds of up to 60 MB/s. Durability-tested to keep up with even the most active lifestyles. The SanDisk Extreme SDHC/SDXC UHS-I card is waterproof, shock-proof, x-ray proof and temperature proof. Wherever you take your device, the SanDisk Extreme SDHC/SDXC UHS-I card is designed to resist tough conditions and limitations. Please be advised that this product comes in Frustration Free Packaging (FFP) which means no retail packaging or cardboard box, the product will arrive in an envelope. Key Features - Delivers the speed and capacity you need to capture 4K ultra HD video - Up to 40 MB/s write speeds for faster shot to shot performance and up to 90 MB/s for faster transfer - High SD card video recording performance with both class 10 and UHS speed class 3 (U3) ratings - Built for and tested in harsh conditions, it is temperature proof, waterproof, shock proof and x-ray proof Specification - 16GB Extreme SDHC U3/Class 10 2-pack. - Up to 90 MB/s read speed. - up to 60 MB/s write speed.