The SanDisk Extreme SD UHS-I memory card delivers performance that lets you take control of your creativity. With shot speeds of up to 60MB/s* and UHS speed Class 3 (U3)(2) recording, you’re ready to capture stunning high-resolution, stutter-free 4K UHD video(1). And, it delivers up to 150MB/s* transfer speeds so you can quickly move your photos where you want them. | *Up to 150 MB/s read speed. Engineered with proprietary technology to reach speeds beyond UHS-I 104MB/s, require compatible devices capable of reaching such speeds. Write speed up to 60 MB/s. Based on internal testing; performance may be lower depending on host device, interface, usage conditions and other factors. 1MB=1,000,000 bytes. | (1)Full HD (1920×1080) and 4K UHD (3840 x 2160) video support may vary based upon host device, file attributes and other factors. | (2)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.