Sandisk SD card 256GB 170MBps V30

Shot speeds up to 70MB/s*, transfer speeds up to 170MB/s* | *Based on internal testing; performance may be lower depending upon host device, interface, usage conditions and other factors. 1MB=1,000,000 bytes. X = 150KB/sec.
Perfect for shooting 4K UHD video(1) and sequential burst mode photography | (1)Full HD (1920×1080) and 4K UHD (3840 x 2160) video support may vary based upon host device, file attributes and other factors
Capture uninterrupted video with UHS Speed Class 3 (U3) and Video Speed Class 30 (V30)(2) | (2)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.
Built for and tested in harsh conditions(3): temperature-proof, waterproof, shock-proof, and x-ray-proof | (3)Card only
At a Glance:
Read speeds up to 170MB/s* [64GB-256GB]
Perfect for shooting 4K UHD video(1) and sequential burst mode photography
UHS Speed Class 3 (U3) and Video Speed Class 30 (V30)(2)
Built for and tested in harsh conditions(3): temperature-proof, waterproof, shock and x-ray proof