Memory Card XQD, 64GB, read speed up to 440MB/s, write speed up to 400MB/s The SONY memory card is designed as a safe and secure and very small device for the storage of data. The card's type is XQD, which makes it suitable for most photo or video cameras. It has a capacity of 64 GB. It has a writing speed of 400 MB/s. Downloading from it is at a speed of 440 MB/s. Thanks to the device's parameters, it's suited for highly demanding operations like the storage of 4K video. Sony XQD 64GB Memory Card Key Features XQD memory card Total capacity: 64 GB Reading speed is 440 MB/s Writing speed is 400 MB/s Perfectly suited for recording 4K videos