Nikon's 64GB XQD memory card MC-XQ64G is designed for professional photographers and videographers. It provides optimal support for high-end D-SLRs and Z-Series mirrorless cameras. The XQD card is equipped with a PCIe 2.0 interface and features read speeds of up to 440 MB/s and write speeds of up to 400 MB/s. With its high write speed, the memory card is ideal for continuous RAW recording or for recording longer 4K videos. Nikon's MC-XQ64G memory card is insensitive to shock, X-rays and magnetic fields. The case has been constructed robustly with regard to the daily professional use