Thank you for viewing. This is a Nextorage B1 Pro memory card with 165GB of storage capacity and boasting read speeds of up to 1950MB/s and write speeds of 1900MB/s. - Brand: Nextorage - Model: B1 Pro - Storage Capacity: 165GB - Read Speed: 1950MB/s - Write Speed: 1900MB/s I mistakenly purchased this, thinking it was an SD card. I have opened the package, and the retailer, Nikon, will not accept a return. I would appreciate it if you would consider purchasing it. Thank you very much.