SanDisk Extreme Pro SDXC UHS-I Memory Card with 200MBPS Read and 140MBPS Write Speed (512GB, Black)The most powerful in its series, the SanDisk Extreme Pro 512GB SDXC UHS I Memory Card in Black delivers performance that elevates your creativity. With write speeds of up to 140MBPS and UHS Speed Class 3 (U3) recording, you're ready to capture stunning high resolution, stutter free 4K UHD video. And, because your pace doesn't let up after the shots are in, it delivers up to 200MBPS transfer speeds for a faster post production workflow. Plus, it's