PRO+ SDXC Class 10 UHS-I U3 Card 64GBOutstanding and Professional Performance EverThe ultra high speed PRO+ SDXC UHS-I memory card supports digital devices with SD card slot. With the Class 10 and UHS-I U3 speed standard, the read and write speed are up to 90MB/s and 80MB/s, providing speedy access to a large number of files. The flash chip adopts MLC technology with which enhances the storage stability and performance of the card. It supports 4K full HD recording, you can enjoy the highest-quality of video chips. Read: Up to 90MB/s Write: Up to 80MB/s