Memory Card WD Purple QD101 SDXC 64GB:The Western Digital memory card is designed as a safe and secure and compact data-storing device. The card type is micro SDXC. This small format means that it will fit into mobile phones and other smaller electronic devices. Its capacity is 64 GB. Its data download speed is 60 MB/s. Downloading from it is at a speed of 100 MB/s. The WD Purple QD101 SDXC 64GB is of a speed class of Class 10. Thanks to the devices parameters, its perfect for highly demanding work like the storage of 4K video. WD Purple QD101 SDXC 64GB Memory Card Key Features micro SDXC card type Interface type: UHS-I and U1 Total memory card capacity: 64 GB Top reading speed of 100 MB/s Speed of writing is 60 MB/s Western Digital memory card speed class is Class 10 Ideal for recording 4K videos Even works in high temperatures Western Digital video class: V10Video Class 10