· Shot speeds up to 60MB/s, transfer speeds up to 100MB/s (Up to 100MB/s read speed. Write speed up to 60MB/s. Based on internal testing; performance may be lower depending upon host device. 1MB=1,000,000 bytes.)· Perfect for shooting 4K UHD video and sequential burst mode photography (Full HD (1920x1080) and 4K UHD (3840 x 2160) video support may vary based upon host device, file attributes and other factors. See HD page on SanDisk site.)· Capture uninterrupted video with UHS Speed Class 3 (U3) and Video Speed Class 30 (V30) (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 SD Association’s official website.)· Built for and tested in harsh conditions: temperature-proof, waterproof, shockproof, and X-ray-proof (Card only. See product packaging or see official SanDisk website for more details regarding proof.)