Product details:

Up to 60MB/s Write Speed for Burst-Mode Performance. With write speeds up to 60 MB/s and read speeds up to 95MB/s (633x), this card exploits your camera's potential for continuous burst-mode shooting. Engineered with Ultra High Speed (UHS-I) bus architecture, it is designed to meet and exceed rigorous performance standards. 256GB Storage Capacity. UHS-1 Speed Class 3. Max. Data Read Speed: 95MB/s. Max. Data Write Speed: 60MB/s. 256GB for Uninterrupted Video Capture at UHS Speed Class 3 (U3). This UHS-I card has a capacity of 256GB and delivers write speeds of up to 60MB/s UHS Speed Class 3 (U3) recording speed for high resolution, real-world color and stutter-free 4K Ultra HD video from your DSLR, advanced digital or HD video camera. Additionally, this card's capacity means you can shoot for longer periods of time. 4K Ultra HD Ready. 4K Ultra HD (3840 x 2160) provides exceptional clarity, but capturing it without interruption requires greater speed and storage than previous generations of imaging cards provide. This 256GB Extreme PRO card delivers both speed and capacity, so the video you shoot today is ready for 4K Ultra HD televisions and monitors. Up to 95MB/s Read Speed Helps Streamline Post-Production. Fast data transfer speeds takes the wait out of most everything you do with your videos after you shoot them. Upload large media files from card to computer very quickly.