The Fastest SD Card declared by Sony is SF-G Series and they are of Class 3 (UHS) and Class 10 (SD) card. They have told that the card will come in three storage choices, 32GB, 64GB, and 128GB. The SD card is capable of recording enhanced 4K videos.
his will be the greatest achievement of developing SD cards as it will be the fastest SD card globally. The Sony Company has not revealed the exact date of launch and the cost.