The SanDisk Extreme PRO SDXC UHS-II 64GB card brings you the high performance that today's professional photographers and videographers need to take outstanding shots with high-speed burst mode and capture cinema-quality 4K and Full HD videos . With faster transfer speeds, it also helps you improve post-production workflow efficiency to give you better all-round results. The world's fastest SDXC card, the 64GB SanDisk Extreme PRO SDXC UHS-II card delivers up to 250MB/s write speed. With that speed, you can take remarkable continuous burst-mode shots with your DSLR to make sure that you capture the one you want. Once you've taken your photos, extreme transfer speeds of up to 280MB/s ensure that your workflow becomes even more efficient. The SanDisk Extreme PRO SDXC UHS-II 64GB card also helps you capture high-quality video: it meets the new U3 video capture specification with a minimum sustained video capture rate of 30MB/s for cinema quality 4K, 3D and Full HD video recording . Best results come when used in conjunction with the SanDisk Extreme PRO SD UHS-II Card Reader/Writer (available separately).