SanDisk 32GB Extreme PRO UHS-I SDHC Memory Card is the most powerful SD UHS-I memory card yet delivers performance that elevates your creativity. With write speeds of up to 90MB/s and UHS speed Class 3 (U3) recording, you’re ready to capture stunning high-resolution, 4K UHD video. And, because your pace doesn’t let up after the shots are in, it delivers up to 95MB/s transfer speeds for a faster post production workflow.