SanDisk Extreme PRO SDXC UHS-I Card, 64GB, 170MB/s Fast Transfer, 4K UHD Video Compatible. - Brand: SanDisk - Model: Extreme PRO - Capacity: 64 GB - Speed: 170 MB/s - UHS Speed Class: U3 - Video Quality: 4K UHD - Model Number: SDSDXXY-064G-GN4IN This is an overseas package, so there is no domestic support. Features and Specifications Built-in Memory Type: SDXC Card Memory Media Storage Capacity: 64 GB Compatible Devices: Devices compatible with SDXC 64GB Read Speed: 170 MB/s Write Speed: 90 MB/s Hardware Interface: SDXC Digital Related Speed Class: Class 10 Size Item Dimensions (D x W x H): 32 depth x 24 width x 2 height mm Thank you for viewing.