Sony SFG Tough Robust Ultra High Speed Card SDXC UHS-II U3 V90 memory card with Class 10 and a read speed of up to 300MB/s and a write speed of 299MB/s (UHS-II). Ideal for continuous burst shooting. 100Mbps 4K compatibility with UHS speed class 3. With their new sealed housing, they are optimally protected against external damage. Even water and dust cannot harm them. Their robust design makes the cards bend resistant up to 180N and even a drop from up to five metres cannot harm them. Even if the SD card accidentally falls into water or dust, there is no danger to the stored data, because the cards are both waterproof and dustproof according to IPX8 and IP6X specifications.